one cheeseburger has 340 kcal and 25 grams of fat. what percentage of total kcal comes from fat? (round to the nearest whole number)

Answers

Answer 1

Percentage of total kcal ( total calories ) comes from fat is 66%

To determine the percentage of total calories that come from fat in a cheeseburger, we first need to calculate the number of calories from fat. Fat has 9 calories per gram, so 25 grams of fat would provide 25 x 9 = 225 calories.

Next, we divide the number of calories from fat by the total number of calories in the cheeseburger and multiply by 100 to find the percentage:

(225 / 340) * 100% = 66.18%

Rounding to the nearest whole number, we can say that 66% of the total calories in a cheeseburger come from fat.

Learn more about total calories here

https://brainly.com/question/1357152

#SPJ4


Related Questions

isotopes of a particular element differ with regard to the number of

Answers

Isotopes are forms of an element and has the same quantity of protons and electrons but differing numbers of neutrons.

An simple definition of an isotope

Isotopes are atoms of the same oxidation state but differing numbers of neutrons. They differ in mass, which affects their physical characteristics even if they have almost identical chemical makeup.

What are an example of an isotope?

Atoms that belong about the same chemical and share an atoms Z but a distinct mass number A are known as isotopes. For instance, three isotope of the element carbon, having respective masses of 12, 13, and 14, are carbon-12, carbon-13, and carbon-14.

To know more about Isotopes visit :

https://brainly.com/question/21536220

#SPJ4

a molecule has two bonded atoms around the central atom. the central atom does not have any lone pairs. what is the geometry of the molecule?

Answers

a molecule has two bonded atoms around the central atom. the central atom does not have any lone pairs.  The molecule has a linear geometry.

A molecule with two bonded atoms around the central atom and no lone pairs on the central atom has a linear geometry. This is because the repulsion between the two bond pairs is equal in magnitude and opposite in direction, leading to a 180 degree bond angle between the bonds. The bond angles in a linear molecule are always 180 degrees and the molecule has a straight line shape is observed in many molecules, such as CO2 and N2, and is also observed in some diatomic (two-atom) molecules, such as H2 and Cl2.

Learn more about linear geometry here:

https://brainly.com/question/16178099

#SPJ4

what are structurally simple, inorganic substances that do not contain carbon atoms?

Answers

Minerals are inorganic substance, structurally simple substances free of carbon atoms.

What does the term "inorganic substances" mean?

All substances that are not organic and do not have a carbon-to-carbon (C-C) or carbon-to-hydrogen (C-H) bond are considered inorganic substances. Aqua, table salt (NaCl), sodium bicarbonate, calcium carbonate, and muriatic acid are some examples of typical everyday inorganic compounds (industrial-grade hydrochloric acid).

What do the terms "organic" and "inorganic" mean?

Compounds classified as organic are those derived either indirectly or directly from animals and plants. Inorganic compounds are those compound which are made from minerals. Many times, simple carbon compounds are regarded as inorganic. Examples include carbon monoxide, carbon dioxide, carbides, and the many forms of carbon (such as graphite, diamond, buckminsterfullerene, etc.).

To know more about inorganic substance visit :

https://brainly.com/question/11527440

#SPJ4

you add 5.2 g of iron to 20.50 ml of water and observe that the volume of iron and water together is 21.16 ml . calculate the density of iron.

Answers

The density of the iron is 7.87 g/cm3 when 5.2 g of iron to 20.50 ml of water and volume is 21.16 ml.

Given data in the question is:

Mass of iron is 5.2 g.

Water is 20.50 ml.

Combined volume of iron and water is 21.16 ml.

The density of the iron is Mass/Volume.

Final volume of water = 21.16 - 20.50 = 0.66 ml

Density = 5.2 / 0.66 = 7.87 g/cm3.

Density is a measure of mass per unit volume. It is an intensive property, meaning that its value does not change depending on the size of the object.

Density Meaning in Physics: In physics, density is the ratio of the mass of an object to its volume. It is often defined as mass per unit volume.

Learn more about density:

brainly.com/question/29775886

#SPJ4

if we reduce the volume in the vessel and the new pressure is measured to be 40 atm, what would the new volume be?

Answers

Consequently, the gas's new volume will be 2.5 L. 40 atm of pressure is increased,

if the pressure is reduced to 40 atm.

The relationship between pressure, volume, and temperature is described by the Ideal Gas Law,

which states that PV = nRT,

where P is pressure,

V is volume,

n is the number of moles of gas,

R is the gas constant, and

T is temperature.

To determine the new volume, you would need to know the values of n, R, and T, in addition to the new pressure.

The gas's starting pressure is P1 = 10 atm

The gas's ultimate pressure, P2, is 40 atm.

The gas's initial volume, V1, is equal to 10 L.

Replace the volume and pressure numbers in equation (1);

(40 atm) V2 = (10 atm) (10 L)

V₂ = 100/4

V₂ = 2.5 L

For such more question on Ideal Gas Law

https://brainly.com/question/27870704

#SPJ4

when a solution with a nonvolatile solute is prepared, which of the following will definitely decrease relative to the pure solvent? select all that apply. select all that apply: freezing point of solution vapor pressure of solution boiling point of solution all of the above

Answers

When a solution with a nonvolatile solute is prepared, the freezing point and boiling point of the solution will decrease relative to the pure solvent.

Effect of Nonvolatile Solute on the Freezing Point and Boiling Point of a Solution

When a solution is prepared by dissolving a nonvolatile solute in a solvent, the presence of the solute particles in the solvent affects the behavior of the solution as compared to the pure solvent. The solute particles interfere with the normal packing of solvent molecules, which leads to a decrease in the intermolecular forces between solvent molecules. As a result, the solution requires less energy to freeze or boil compared to the pure solvent. This is why the freezing point and boiling point of the solution are lower than that of the pure solvent. The decrease in the freezing and boiling points is proportional to the concentration of solute particles in the solution. On the other hand, the vapor pressure of the solution is not greatly affected by the presence of the solute, as the solute particles do not evaporate with the solvent.

To know more about the boiling point of pure solvent, visit:https://brainly.com/question/1408304

#SPJ4

a certain substance has a heat of vaporization of 49.21 kj/mol. at what kelvin temperature will the vapor pressure be 5.00 times higher than it was at 293 k?

Answers

The vapor pressure will be 5.00 times higher than it was at 293 k at 393 k.

The Clausius Clapeyron equation calculates the relationship between a substance's vapor pressure (P) and temperature to forecast the rate at which vapor pressure rises per unit increase in temperature (T).

A phase change from the liquid phase to the vapor phase is called vaporization of an element or molecule. Both evaporation and boiling result in vaporization.

To find the temperature at which the vapor pressure will be 5.00 times higher than it was at 293 K, we can rearrange the equation to solve for T: We know,

 [tex]T = \frac{del H}{(R * ln\frac{P_2}{P_1} )} + 293[/tex]

where P₁ is the vapor pressure at 293 K and P₂ is the vapor pressure at the desired temperature. Plugging in the values, we get:

[tex]T = \frac{49.21}{8.314*ln(5)} +293[/tex]

Solving for T, we get a temperature of approximately 393 K

Learn more about vaporization

brainly.com/question/24096079

#SPJ4

What type of molecules are found in living things and contain both carbon and hydrogen?

Answers

The building blocks of life are known as organic molecules, which are found in all living organisms and contain both carbon and hydrogen.

What are organic molecules?

Living creatures possess organic molecules that are composed of both carbon and hydrogen. Organic molecules are the basis of life and are essential for many biological functions, including energy storage, communication, and structural support. Carbohydrates, lipids, nucleic acids, and proteins are some examples of organic compounds.These molecules include proteins, lipids, nucleic acids, and carbohydrates.

Sugars like glucose and fructose are examples of carbohydrates, which give cells energy. Various compounds known as lipids are used as insulation and energy storage. DNA and RNA are two examples of nucleic acids that store and convey genetic information.

To know more about organic molecules, visit:

https://brainly.com/question/10504103

#SPJ4

why licl is a solid at room temperature but ncl3 is a liquid with a relatively low boiling point in terms of attractive forces between particles

Answers

Answer:

Explanation:

The difference in the physical state of LiCl and NCl3 at room temperature is due to the difference in their intermolecular attractive forces.

LiCl has strong ionic bonds, which are strong attractive forces between positive and negative ions. These strong attractive forces result in a high melting and boiling point, making LiCl a solid at room temperature.

NCl3, on the other hand, has weaker covalent bonds, which are attractive forces between atoms in a molecule. These weaker attractive forces result in a lower melting and boiling point, making NCl3 a liquid with a relatively low boiling point at room temperature.

The strength of intermolecular forces is determined by the type of bond and the molecular structure. Ionic bonds are stronger than covalent bonds, and the stronger the bond, the higher the melting and boiling points of a substance.

during the extraction and separation of hexanol, will the organic layer be on top or bottom in the separatory funnel (compared to the aqueous solution)?

Answers

During the extraction and separation of hexanol, the organic layer will be on top in the separatory funnel.

The organic layer will be on top because hexanol is more soluble in organic solvents than in water. 1-hexanol is an organic alcohol with a six-carbon chain and the condensed structural formula CH3(CH2)5OH. A separatory funnel is a piece of scientific equipment used in liquid-liquid extractions to divide a mixture's components into two immiscible solvent phases of different densities. It is also referred to as a separation funnel, separating funnel, or simply a sep funnel. In a typical reaction, the two phases are generally an aqueous phase and a lipophilic organic solvent, such as ether, MTBE, dichloromethane, chloroform, or ethyl acetate.

learn more about Hexanol Refer:brainly.com/question/13052659

#SPJ4

The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. Part A : What is the specific heat ratio γ? Part B : By what factor does the temperature increase?

Answers

we get T1*V1γ-1 = T2*V2γ-1, which gives T2/T1 = 2γ-1 = 1.25, which gives T2 = 1.25*T1, therefore temperature increases by a factor of 1.25

What is the heat ratio, specifically?

The ratio of a gas's specific heat at a constant pressure to that of the gas's specific heat at a constant volume is known as the specific heat ratio of a gas, which is symbolized as gamma " but also known as "k."

Calculation-

in an adiabatic process

PVγ = constant

therefore      P1*V1γ  = P2*V2γ  

here we have in part a    that    V2 = 0.5*V1   and  P2 = 2.5*P1

putting in the values   we get, 2γ = 2.5 which on solving we get

γ = 1.3219

now part b, we can use                  

TVγ-1 = constant, therefore here we have

T1 = initial temperature, T2 = final temperature

and V2 = 0.5*V1

on putting in the values we get,

T1*V1γ-1 = T2*V2γ-1

which gives  

T2/T1 = 2γ-1 = 1.25      which gives    T2 = 1.25*T1

therefore,

temperature increases by a factor of 1.25

To know more about specific heat visit:

https://brainly.com/question/11297584

#SPJ4

a 10.0 ml aliquot of a liquid is found to have a mass of 7.883 grams. calculate the density of this liquid.

Answers

The density of the liquid is: 0.7883 g/ml

What is density?

It is a physical quantity that expresses the ratio of the body mass to the volume it occupies.

The formula and the procedure we will use is:

d = m/v

Where:

v= volumed= densitym= mass

Information about the problem:

m = 7.883 gv = 10.0 mld = ?

Applying the density formula we get:

d = m /v

d = 7.883 g /10.0 ml

d = 0.7883 g/ml

Learn more about density in: brainly.com/question/1354972

#SPJ4

by what percentage does the absorbance decrease if 12.25 ml of water is added to a 16.75 ml sample of 0.500 m cr3 ?

Answers

According to Beer-Lambert law, absorbance will also decrease by 42.4%

In chemistry, awareness is the abundance of a constituent divided by using the whole extent of an aggregate. several styles of mathematical description can be outstanding: mass concentration, molar awareness, quantity concentration, and volume awareness.

In technology, the amount of a substance, which includes salt, this is in a positive amount of tissue or liquid, along with blood. A substance becomes more concentrated while much less water is present. The concentration of the solution may be expressed in molarity, molality, normality, mole fraction, and many others. the attention of a substance is the amount of solute present in a given quantity of answer. Concentrations are commonly expressed in phrases of molarity, defined as the variety of moles of solute in 1 L of answer.

To learn more about Concentration visit here:

brainly.com/question/10725862

#SPJ4

sucrose c12h22o11, has a molar mass of 342 g/mol. how many atoms of carbon are there in 684g of sucrose

Answers

The number of atoms of carbon in 684 g of sucrose is 24 atoms.

To calculate the number of atoms of carbon in 684 g of sucrose (C12H22O11), we must first calculate the quantity of moles.

Sucrose has a molar mass of 342 g/mol, so 684 g of sucrose would be 684/342 = 2 moles. Since sucrose has 12 atoms of carbon per molecule, there would be 2 x 12 = 24 atoms of carbon in 684 g of sucrose.

Molar mass is the mass of one mole of a substance, expressed in grams per mole (g/mol). It is equal to the sum of the atomic masses of all the atoms in one mole of the substance, and is used to calculate the mass of a given number of moles of a substance.

Learn more about sucrose c12h22o11:

https://brainly.com/question/24130125

#SPJ4

how many moles are in 4.5 x 1022 molecules/atoms of co2?

Answers

There are 0.075 moles of CO2 are present in 4.5 x 1022 molecules/atoms of co2

Mole — what is it?

Mole is stated as the quantity of a material that consists 6.022 X 1023 entities of the supplied substance, such as particle, atoms, ion, molecules, etc. The quantity of atom, ions, or molecules is measured in moles.

One mole of a substance is defined as having Avogadro's number of entities (atoms, molecules, ions, etc.). Avogadro's number is defined as 6.022 x 10^23 entities per mole.

So, to convert from the number of entities to the number of moles, divide the number of entities by Avogadro's number:

4.5 x 10^22 entities / 6.022 x 10^23 entities/mol = 0.075 moles

Therefore, 4.5 x 10^22 CO2 molecules/atoms is equivalent to 0.075 moles of CO2.

To know more about mole visit :

https://brainly.com/question/26416088

#SPJ4

why is it important to allow a sterilized inoculating loop to cool before attempting to sample liquid culture?

Answers

It is important to allow a sterilized inoculating loop to cool before attempting to sample liquid culture because it avoids killing of microorganisms.

It is important to cool the inoculating loop prior to obtaining a bacterial sample because the high heat in loop could kill the bacteria once they touch our loop. Bacteria might be versatile in nature, but they cannot handle a 400 degree hot metal loop.

We must allow our loop or needle to cool before our try to pick up our organism. If we pick up organism with a hot tool, oour cells will be killed. To cool our loop or needle quickly, place it on a section of agar that is uninoculated or is at least different from the area from which we will pull cells.

Learn more about sterilized inoculating loop from the link given below.

https://brainly.com/question/30425703

#SPJ4

aqueous sulfuric acid will react with solid sodium hydroxide to produce aqueous sodium sulfate and liquid water . suppose 29. g of sulfuric acid is mixed with 12.0 g of sodium hydroxide. calculate the maximum mass of water that could be produced by the chemical reaction. round your answer to significant digits.

Answers

H2SO4 is our limiting reactant, and moles of H2SO4 will dictate the maximum amount of product that can be formed.

The correctly balanced equation for the reaction:
H2SO4(aq) + 2NaOH(s) ==> Na2SO4(aq) + 2H2O(l)

To find the limiting reactant. Divide moles of each reactant by the corresponding coefficient in a balanced equation and see which is less

For H2SO4: 29 g H2SO4 x 1 mol H2SO4/98 g = 0.294 mols (÷1->0.294)
For NaOH: 12 g NaOH x 1 mol NaOH / 40. g = 0.3 mols (÷2->0.15)

Since 0.294 is less than 0.15, H2SO4 is our limiting reactant, and moles of H2SO4 will dictate the maximum amount of product that can be formed
If the reaction finishes, there can be no more than zero grams of H2SO4 left over. There shouldn't be any left-over since it will run out before the NaOH is consumed.

To learn more about limiting reactants please visit -
https://brainly.com/question/24162926
#SPJ4

Can anyone help me with all of these?

Answers

The frequency and the wavelength are;

1)  4 * 10^-5 m

2) 2 * 10^-7 m

3) 4.4 * 10^13 Hz

4)  4.6 * 10^14 Hz

5)  4.5 * 10^-7 m

What is the frequency of light?

From the fact that;

c = λf

c = Speed of light

λ = wavelength

f = frequency

1)  λ = 3 * 10^8/7.5 * 10^12

λ = 4 * 10^-5 m

2)  λ = 3 * 10^8/1.5 * 10^15

λ = 2 * 10^-7 m

3) f = c/ λ

f = 3 * 10^8/6.8 * 10^-5

f = 4.4 * 10^13 Hz

4) f = 3 * 10^8/6.5 * 10^-7

f = 4.6 * 10^14 Hz

5)  λ = c/f

= 3 * 10^8/6.6 * 10^14

= 4.5 * 10^-7 m

Learn more about wavelength:https://brainly.com/question/13533093

#SPJ1

choose atomic radius from the drop-down menu to see the relative sizes of the elements. in which parts of the table do you find the largest and smallest atoms?

Answers

The atoms of cesium (Cs) have the largest atomic radius on the periodic table.

Cesium has the chemical symbol Cs and the atomic number 55. It's a soft, silvery-gold alkali metal with a melting point of twenty-eight point five degrees Celsius (83.3 degrees Fahrenheit), making it one of only five elemental metals that's liquid at or near room temperature. Cesium shares physical and chemical properties with rubidium and potassium. Cesium is found in the Earth's crust at a concentration of about 3 parts per million on average. It's most commonly found in atomic clocks, photoelectric cells, and medical treatments.

A photoelectric cell is a type of photodetector in which light energy is converted into electrical energy. It is made of a semiconductor material that, when exposed to light, emits electrons. It is used in a variety of applications, including security systems, cameras, and solar cells. Photoelectric cells were one of the first forms of renewable energy, and they can be found in a variety of applications such as solar cells, security systems, and cameras. They're also used in industrial settings to control motors, automatic door openers, and traffic lights.

To  know more about  Cesium:

brainly.com/question/24316293

#SPJ4

examine other groups and periods in the periodic table to see if the same trends exist. what trends do you see in ionization energy down a group and across a period?

Answers

The ionization energy decreases within a group. The energy of ionization rises over time.

When looking at the periodic table of elements, what are the various trends that can be observed?

Patterns in the elements of the periodic table are called periodic trends. Electronegativity, ionization energy, electron affinity, atomic radius, and metallic character are the most important trends.

What are the five periodic trends, and how important are each of them?

The following are major periodic trends: electronegativity, the energy of ionization, electron affinity, the atomic radius, the melting point, and the metallic nature of the substance. The arrangement of the periodic table gives chemists a useful tool for quickly predicting an element's properties: periodic trends.

To know more about ionization energy visit :-

https://brainly.com/question/28385102

#SPJ4

assuming an efficiency of 49.20%, calculate the actual yield of magnesium nitrate formed from 148.4 g of magnesium and excess copper(ii) nitrate.

Answers

To calculate the actual yield of magnesium nitrate, you need to know the theoretical yield and then compare it to the actual yield. The theoretical yield is calculated based on the balanced chemical equation for the reaction between magnesium and copper(ii) nitrate. The actual yield is the amount of magnesium nitrate that was actually produced during the reaction.

About Magnesium Nitrate

Magnesium nitrate refers to the inorganic compound with the formula Mg(NO₃)₂ₓ, where x = 6, 2, and 0. These are all white solids. The anhydrous material is hygroscopic, quickly forming hexahydrate when in air. All salts are highly soluble in water and ethanol.

Learn More About Magnesium Nitrate at https://brainly.com/question/20461056

#SPJ4

What determines whether or not an atom is reactive?

Answers

The number of valence electrons, the electrons found in the outer electron shell of the atom, determines whether or not an atom reactive.

     

Reactivity is the property of an atom in which it is either likely or unlikely to form a bond with another atom to create a molecule. The three types of bonds are ionic, covalent, and metallic. The Atoms seek to fill their valence shell with eight electrons but not all atoms will have enough electrons to achieve that goal. If an atom has less than eight valence electrons it is more likely to bond with other atoms to share electrons and artificially fill the valence shell of both atoms. The number of electrons in the outermost shell of an atom determines its reactivity. Noble gases have low reactivity because they have full electron shells. Halogens are highly reactive because they readily gain an electron to fill their outermost shell. Elements in the periodic table whose outermost shells are filled with electrons (8). Helium, neon, and argon are examples of noble gas elements. They are very non-reactive. The atoms are most stable, least reactive, when their outermost electron shell is full. Most of the elements important in biology need eight electrons in their outermost shell in order to be stable, and this rule of thumb is known as the octet rule.  

Link more about atom reactive here:

https://brainly.com/question/13518322

#SPJ4

40.0 g of a solute is dissolved in 500. ml of a solvent to give a solution with a volume of 495 ml. the solvent has a density of 1.00 g/ml. which statement about this solution is correct?

Answers

40.0 grams of a solute is dissolved in 500 milliliters of a solvent with a density of 1.00 g/ml to produce a solution with a volume of 495 ml.  The concentration of the solution is 0.08081 g/ml

Solution Concentration Calculation

In this solution, 40.0 grams of a solute is dissolved in 500 milliliters of a solvent with a density of 1.00 g/ml to produce a solution with a volume of 495 ml. The concentration of the solution can be calculated by dividing the mass of the solute (40.0 g) by the volume of the solution (495 ml). The result of this calculation is 0.08081 g/ml, which represents the concentration of the solution. This means that in every milliliter of the solution, there are 0.08081 grams of the solute. It's important to note that the concentration of a solution is an expression of how much solute is present in a given volume of the solvent and is usually expressed in units of grams per milliliter (g/ml) or moles per liter (M).

To know more about the concentration of a solution, visit:https://brainly.com/question/14077874

#SPJ4

what is each compound's systematic name? part a ch3ch2c|nhch3hch2ch2c|ch3hch3 spell out the full name of the compound.

Answers

The compound's systematic name are :

1) CH₃ - CH₂ - CH - CH₃    =   2 - amino butane

                        |

                      NH₂

2) CH₃ - CH₂ - CH - CH₃   =  2 chloro butane

                        |

                       Cl

The compound's systematic name are as follows :

The IUPAC naming also called as the systematic naming. There are some rules to name the compounds :

Find out the longest chain.Number the longest chain , starting from the carbon nearest to the functional group.Name the substituent attached followed by the longest chain name.

1) CH₃ - CH₂ - CH - CH₃      

                        |

                      NH₂

This compound named as = 2 - amino butane

2) CH₃ - CH₂ - CH - CH₃  

                        |

                       Cl

This compound named as = 2 chloro butane

To learn more about systematic name here

https://brainly.com/question/28907449

#SPJ4

the ph of a solution prepared by the addition of 10. ml of 0.002 m koh(aq) to 10. ml of distilled water is closest to

Answers

The pH of a solution prepared by the addition of 10 ml of 0.002 M KOH (aq) to 10 ml of distilled water is closest to 13.

The addition of 10 ml of 0.002 M KOH to 10 ml of distilled water results in a final concentration of 0.002 M KOH in the solution. This concentration of KOH will result in a high hydroxide ion concentration, which will make the solution basic with a pH greater than 7.

The pH of a solution is a measure of its acidity or basicity and is defined as the negative logarithm of the hydrogen ion concentration. A pH of 7 is neutral, a pH less than 7 is acidic, and a pH greater than 7 is basic.

The pH of the solution can  be calculated using the equation:

pH = -log[OH-]

Since the concentration of hydroxide ions, [OH-], is equal to the concentration of KOH, 0.002 M, the pH of the solution is:

pH = -log(0.002) = 2 + log(10^3) = 2 + 3 = 5

Therefore, the pH of the solution is closest to 13.

Learn more about pH here :

https://brainly.com/question/15289741

#SPJ4

Final Answer:

pH of diluted solution = 11

Explanation:

It is given that 10 mL of a 0.002 M KOH(aq) solution is diluted by adding 10 mL of distilled water. We are required to then calculate the pH of the diluted solution.

To solve this question, we can break it up into 3 sections:

The dilution of the initial solution.Calculation of pOH of diluted solution.Calculation of pH from pOH.

Firstly, what is pH?

pH, short for 'potential of hydrogen' is a scale used to measure the acidity of substances, where 0 is most acidic, and 14 is least acidic. pH is calculated with the formula:

[tex]\boxed{\large\textsf{$\sf pH=-\log_{10}\left[H^+\right]$, where $\rm \left[H^+\right]$ = concentration of H$^+$ ions}}[/tex]

Similarly, pOH is used to measure the basicity of substances, where 0 is the most basic, and 14 is the least basic. pOH is calculated with the formula:

[tex]\boxed{\large\textsf{$\sf pH=-\log_{10}\left[OH^-\right]$, where $\rm \left[OH^-\right]$ = concentration of OH$^-$ ions}}[/tex]

The mathematical relationship between pH and pOH is such that:

[tex]\boxed{\Large\textsf{14 = pH + pOH}}[/tex]

Step 1:

First we need to calculate the concentration of the diluted solution. To do this, we can use the dilution formula, c₁V₁ = c₂V₂, where the subscripts 1 and 2 denote initial and final respectively.

Hence, c₁ = 0.002 M, V₁ = 0.010 L, and V₂ = 0.010+0.010=0.020 L. Rearranging to find c₂:

[tex]\large\textsf{$\sf\displaystyle c_2=\frac{c_1V_1}{V_2}=\frac{0.002\times 0.010}{0.020}$}\\\\\boxed{\boxed{\large\textsf{$\sf\displaystyle\therefore concentration\ of\ diluted\ solution=0.001$ M }}}[/tex]

Step 2:

If we consider the dissociation reaction of KOH, which is a strong base and will fully dissociate into its ions:

[tex]\Large\text{$\rm KOH_{\,(aq)}\leftrightharpoons K^+_{\ (aq)}+OH^-_{\ (aq)}$}[/tex]

We can see that there is a 1:1 stoichiometric ratio between KOH and OH⁻ and therefore concentration of KOH = concentration of OH⁻.

Therefore, we can calculate pOH:

[tex]\boxed{\boxed{\large\textsf{$\sf\therefore pOH=-\log_{10}\left[0.001\right]=3$}}}[/tex]

Step 3:

Finally, we can use the fact that pH + pOH = 14 and so pH = 14 - pOH.

Therefore, pH = 11

[tex]\hrulefill[/tex]

To learn more about pH:

https://brainly.com/question/36153729

the mineral halite has cube-shaped crystals because: group of answer choices there are no planes along which the mineral can break cubes are the most common way two tetrahedron can join of the arrangement of atoms in the crystal lattice halite is soluble in water

Answers

The cube-shaped crystals of halite are due to the arrangement of atoms in the crystal lattice.

Halite is a type of salt with a simple cubic crystal structure, where the sodium and chloride ions are arranged in a repeating pattern in three dimensions. This arrangement gives rise to the cube-shaped crystals that are characteristic of halite.

The cube-shaped crystals of halite are due to the arrangement of atoms in the mineral's crystal lattice. Halite is a type of salt that has a simple cubic crystal structure, where sodium and chloride ions are arranged in a repeating pattern in three dimensions. The repeating pattern of ions in the crystal lattice gives rise to the cube shape of the crystals. The crystal shape is not related to the fact that halite is soluble in water or to the way two tetrahedron can join. Instead, the cube shape is a result of the arrangement of the atoms in the crystal lattice.

Learn more about halite here:

https://brainly.com/question/20064767

#SPJ4

what is the atomic number for an element whose mass number is 152, which contains 90 neutrons per atom?

Answers

The atomic number for an element with a mass number of 152 and 90 neutrons per atom is 62, which corresponds to the element samarium.

What is samarium element?

Samarium is a silvery-white metal that is highly reactive, but it has no known biological role. It is found in small amounts in the Earth's crust and is mainly used in certain types of magnets and in certain types of nuclear reactors.

Calculation of atomic number:

The atomic number is the number of protons in the nucleus of an atom and is equal to the number of electrons in a neutral atom. Since the mass number is the sum of protons and neutrons in an atom, and the number of neutrons in this atom is 90, the number of protons must be [tex]152 - 90 = 62[/tex].

To know more about atomic number calculation, check out:

https://brainly.com/question/28826089

#SPJ4

A pair of electrons would have _ when they are close together than when
they are far apart.
less electric charge
more electric current
more electric charge
less electric potential energy
more electric potential energy
less electric current

Answers

A pair of electrons would have more electric potential energy when they are close together than when they are far apart.

What does the potential energy between two charges look like?

The system's potential energy grows when two like charges—two protons or two electrons—are brought adjacent to one another. A proton and an electron, which are two different charges, are moved towards one another, the electric potential energy of the system diminishes.

What will happen if two electrons go into close vicinity to one another?

Due to the same negative charge, a repulsive force is generated between two electrons as they approach one another. So, a battle is waged against this repellent energy in an attempt to bring them closer. Electrostatic potential energy is used to store this work.

Learn more about electrons here:

brainly.com/question/6283462

#SPJ4

how many moles of kr are contained in 398 mg of kr?
a. 4.75 x 10-3 moles Kr b. 33.4 moles Kr c. 211 10-4 moles Kr d. 2.99 * 10-3 moles Kr e. 1.19* 10-4 moles Kr'

Answers

The stated statement states that 398 mg of Krypton contains 4.75 x 10-3 moles of Kr.

What it is in chemistry is KR?

Krypton (Kr) is a naturally occurring element that is a rare gas belonging to Periodic Table Group 18 (noble gases). It only forms a small number of chemical compounds. Krypton is monoatomic, tasteless, colorless, and about 3.5 times heavier than air.

KR is a metal, right?

Krypton is categorized as a chemistry element and then a nonmetal in the chemical world. William Gordon and his helper Morris Travers found it in 1898.

The molar mass of Kr is 83.80 g/mol.

So, moles = 398 mg / 1000 mg/g / 83.80 g/mol = 4.75 x [tex]10^{-3}[/tex] moles Kr

So, the answer is a. 4.75 x [tex]10^{-3}[/tex] moles Kr.

To know more about Krypton visit:

https://brainly.com/question/2364337

#SPJ4

chloroform (chcl3), an important solvent, is produced by a reaction between methane and chlorine. ch4(g) 3 cl2(g) chcl3(g) 3 hcl(g) how many grams of ch4 is needed to produce 40.0 g chcl3?

Answers

The chemical name is CHCl3. It is a common, thick, colorless liquid with a pleasant fragrance.

Chloroform may be released into the air as a result of its production during the chlorination of drinking water, wastewater, and swimming pools. Chloroform, a substance used in industry, is a lacrimator.

From CH4 + 3 Cl2 comes CHCl3 + 3 HCl.

One molecule of CHCl3 and three molecules of HCl were produced when three molecules of Cl and one molecule of CH4 were mixed.

This predicts a 1:1 ratio between CH4 and CHCl3.

Due to the 1:1 ratio, the amount of CHCl3 produced is 66.5/119.5 (molar mass of CHCl3), or 0.556 moles, and the amount of CH4 produced is 0.556 moles mass, or 0.556 x 16 (molar mass of CH4), which equals 8.896 grams.

To know more about chloroform

https://brainly.com/question/13334667

#SPJ4

Other Questions
Which sketch is shared in the part file the demonstration of what symptom would suggest that an insulin-dependent client is experiencing a hypoglycemic reaction? select all that apply. Can someone help me with this? Last year, maria failed to file a tax return. she has since learned that she might be able to file it late. when she goes to file, what should she expect? the duration of a discrete time signal is the length of its support interval (i.e. where it is not zero) if we have: Answer the follwing. SLATE under "Assignments => Assignment Part A in Week 4, before class begins.Personal Financial StatementsLisa is trying to get her personal finances in order. She does not know how to organize the following information.Mortgage PaymentHouseCredit Card BalanceAfter-tax IncomeGroceries ExpenseCarClothing OwnedCar Loan PaymentFurnitureCar LoanCar MaintenanceUtilities ExpenseCash in bankMortgage1.410350.00011.1603,60028818,00054053214.00012.000280120600217.200~ Download8 PrintOpen in this problem, you will apply kinematic equations to a jumping flea. take the magnitude of free-fall acceleration to be 9.80 m/s2 . ignore air resistance.A flea jumps straight up to a maximum height of 0.450 m . What is its initial velocity v0 as it leaves the ground?How long is the flea in the air from the time it jumps to the time it hits the ground? country 'p' is at point 'd' of the business cycle. as an economist, what steps would you suggest government authorities to take? which of the following is an example of an ethical business activity? the employee told several jokes that made fun of blonde women. the employee used the company postage meter to mail letters to her family. the employee reported to his supervisors that a co-worker had misappropriated company funds. the employee went to see a movie one afternoon when she was supposed to be making a sales call. the employee condoned a fellow employee's use of alcohol on the job. high arcing fault current do not necessarily result in high incident energies in all situations. for instance, if the protecting ocpd is current-limiting in its current-limiting range for the available arcing fault current, the ocpd will reduce the magnitude of the arcing current that actually flows and clear the arcing current in less than 1/2 cycle, resulting in low incident energy levels. 3. For two cylinders ratio of diameters A and B, the ratio of lengths is 3 : 1 and the is 1:2. Calculate the ratio of their volumes. sensory or nerves carry information to the brain and spinal cord. True or False when assessing buyer power using porter's five forces, which of the following is not consistent with low buyer power? a. brand loyalty b. control of distribution channel c. large number of suppliers d. low price The following code will throw an ArrayIndexOutOfBoundsException. Can you fix it?import java.util.*;public class TestForLoop{public static void main(String[] args){ArrayList myList = new ArrayList();myList.add(50);myList.add(30);myList.add(20);int total = 0;for (int i=0; i after completing your analysis of the rating system, you determine that any rating greater than or equal to 3.5 points can be considered a high rating. you also know that chocolate and tea considers a bar to be super dark chocolate if the bar's cocoa percent is greater than or equal to 70%. you decide to create a new data frame to find out which chocolate bars meet these two conditions. assume the first part of your code is: best trimmed flavors df % you want to apply the filter() function to the variables cocoa.percent and rating. add the code chunk that lets you filter the data frame for chocolate bars that contain at least 70% cocoa and have a rating of at least 3.5 points. convert 4.5cm^3 to mL please help!!the rubric says to state what type of function f(x) is and how its identified state what type of function g(x) is and how you identified it list common key features breaking down longer chains into smaller chains or skill clusters, teaching each skill cluster, and then teaching the first step, then the second step, then the third step (and so on) is which form of behavior chaining? sara, who weighs 69.0 kg, enjoys a 513-calorie (513 kcal) breakfast of pancakes loaded with fruits, cream, and syrup. she wishes to maintain her weight, so she decides to work out before going to her fitness group's weekly meeting. if the height of a single stair is 12.0 cm, and her body is only 33% efficient in converting chemical energy to mechanical energy, determine the number of stairs sara must climb to cancel out the calories consumed. why did farmers return to the midwest after the dust bowl?