Answer:
Explanation:
Potassium hydroxide fully ionizes when dissolved in water according to the following equation:
K
O
H
→
K
+
+
O
H
−
Now, let's find the relationship between
K
O
H
and
O
H
−
1
:
1
ratio
⇒
[
K
O
H
]
=
[
O
H
−
]
=
6.7
×
10
−
3
M
In any aqueous solution,
[
H
3
O
+
]
and
[
O
H
−
]
must satisfy the following condition:
[
H
3
O
+
]
[
O
H
−
]
=
K
w
[
H
3
O
+
]
=
K
w
[
O
H
−
]
[
H
3
O
+
]
=
1.0
×
10
−
14
6.7
×
10
−
3
[
H
3
O
+
]
=
1.5
×
10
−
12
M
p
H
=
−
log
[
H
3
O
+
]
p
H
=
−
log
[
1.5
×
10
−
12
]
p
H
=
11.83
which set correctly describes the hybridization of each atom marked with an arrow? 341 group of answer choices a b c d
The correct option is: 1 = sp2, 2 = sp3, 3 = sp3, 4 = sp2.correctly describes the hybridization of each atom marked with an arrow
In organic chemistry, hybridization refers to the mixing of atomic orbitals to form a new set of hybrid orbitals. The most common types of hybridization in organic molecules are sp3, sp2, and sp.
Carbon atoms with sp3 hybridization have four orbitals that are hybridized, resulting in tetrahedral geometry around the carbon atom. Carbon atoms with sp2 hybridization have three orbitals that are hybridized, resulting in planar geometry with a 120° bond angle. Carbon atoms with sp hybridization have two orbitals that are hybridized, resulting in linear geometry with a 180° bond angle.
In this question, the first carbon atom is bonded to two other atoms and one double bond, which suggests sp2 hybridization. The second and third carbon atoms are bonded to three other atoms, which suggests sp3 hybridization. The fourth carbon atom is bonded to three other atoms and one double bond, which suggests sp2 hybridization.
which set correctly describes the hybridization of each atom marked with an arrow?
A. 1 = sp3, 2 = sp3, 3 = sp3, 4 = sp3
B. 1 = sp2, 2 = sp3, 3 = sp3, 4 = sp2
C. 1 = sp3, 2 = sp2, 3 = sp2, 4 = sp2
D. 1 = sp2, 2 = sp2, 3 = sp2, 4 = sp3
Learn more about hybridization here:
https://brainly.com/question/14140731
#SPJ4
what is the molarity of a solution that contains 3.00 moles of solute and 12.00 liters of solution? select one: a. not enough information to determine b. 0.25 m c. 1 m d. 4 m
0.25 M is the molarity of a solution that contains 3.00 moles of solute and 12.00 liters of solution
A colligative property is a physical characteristic that depends on the quantity of solute supplied rather than the type of solute; for example, the freezing point will be lowered by the same amount of degrees Celsius whether we add 1000 sugar or salt particles to water.
Molarity (M) = moles of solute / liters of solution
M = 3.00 moles / 12.00 liters = 0.25 M
The amount of a solute per unit volume of solution is how much a chemical entity is present in a solution, and this is known as its molar concentration.
"The molarity of products is divided by the molarity of reactants" is the formula for determining an equilibrium constant.
The equilibrium constant is defined as the ratio between the concentrations of the reactant and the product.
Learn more about The amount of a solute per unit volume of solution is how much a chemical entity is present in a solution, and this is known as its molar concentration.
"The molarity of products is divided by the molarity of reactants" is the formula for determining an equilibrium constant.
The equilibrium constant is defined as the ratio between the concentrations of the reactant and the product.
Learn more about molarity here:
https://brainly.com/question/8732513
#SPJ4
How many moles does 155.3 L of chlorine gas have at STP?
Answer:
5.88 moles
Explanation:
At Standard Temperature and Pressure (STP), the conditions are defined as a temperature of 0°C (273.15 K) and a pressure of 1 atm. To calculate the number of moles of chlorine gas in 155.3 liters at STP, we can use the Ideal Gas Law:
PV = nRT
where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.
Substituting the known values:
P = 1 atm
V = 155.3 liters
R = 0.0821 L·atm/mol·K
T = 273.15 K
Solving for n:
n = (PV) / (RT) = (1 atm * 155.3 liters) / (0.0821 L·atm/mol·K * 273.15 K) = 5.88 moles
In conclusion, 155.3 liters of chlorine gas at STP would contain 5.88 moles of chlorine gas.
Rank the solvents according to their polarities, from the most polar to non-polar. ethyl acetate, water, acetone, hexane, ethanol.
From most polar to least polar, water comes before ethanol, acetone, ethyl acetate, and then hexane.
What is solvent?In order to create a homogenous mixture, additional substances must dissolve in a solvent. For the purpose of facilitating different chemical reactions and separations, solvents are used to dissolve solutes, which can be either a solid, liquid, or gas.
The distribution of electronegativity among a solvent's atoms determines how polar the solvent is. High polarity will be present in solvents with polar functional groups and high electronegativity. Due to the high electronegativity of oxygen and the presence of hydrogen bonding, water is the most polar of the mentioned solvents. Due to the hydroxyl (-OH) functional group, ethanol is also polar. Due to the carbonyl (C=O) functional group in acetone, which forms a polar bond, acetone is more polar than ethyl acetate and hexane. Due to its ester functional group, ethyl acetate is a slightly polar solvent, however it is still less polar than acetone.
To know more about solvent, visit:
https://brainly.com/question/15212814
#SPJ4
the mass ratio of sodium to fluorine in sodium fluoride is 1.21:1. a sample of sodium fluoride produced 23.4 g of sodium upon decomposition. part a how much fluorine (in grams) was formed?
The amount of fluorine formed from 23.4 g of sodium after decomposition at a 1.21:1 sodium fluoride ratio is 18.51 grams
The decomposition reaction of sodium fluoride is an equilibrium reaction. An equilibrium reaction is a reversible reaction in which the products of the reaction can react again to form the reactants. The equilibrium reaction occurs in a closed chamber/container.
The state of equilibrium in an equilibrium system is stable if there is no influence from the outside system. If an influence (action) is applied to the equilibrium, the system will shift toward the new equilibrium.
One factor shifting the balance is concentration. If the concentration of the reactants is added, the equilibrium will shift towards the formation of products.
1.21:1 = 22.4 ÷x (where x is the amount of fluorine produced)
So,
x = 22.4/1.21 = 18.51 gram
Learn more about decomposition reaction at https://brainly.com/question/27300160
#SPJ4
if the reaction yield is 94.4%, what mass in grams of hydrogen is produced by the reaction of 7.80 g of calcium with 1.83 g of water?
0.87 g of hydrogen is produced by the reaction of 7.80 g of calcium with 1.83 g of water.
To find the amount of hydrogen produced in the reaction, we need to calculate the theoretical yield of hydrogen. This is done by finding the amount of calcium and water that react and finding the amount of hydrogen that is produced from this amount.
From the given information, 7.80 g of calcium reacts with 1.83 g of water. We can use the balanced equation for the reaction to find the amount of hydrogen produced:
Ca + 2H₂O -> Ca(OH)₂ + H2
From this equation, 1 mole of calcium reacts with 2 moles of water to produce 1 mole of hydrogen.
So, the theoretical yield of hydrogen is (1.83 g/mole) x (1 mole/2 moles) = 0.92 g of hydrogen.
Finally, the actual yield of hydrogen is found by multiplying the theoretical yield by the reaction yield, which is 94.4%.
The actual yield of hydrogen = 0.92 g x 94.4% = 0.87 g
Therefore, 0.87 g of hydrogen is produced by the reaction of 7.80 g of calcium with 1.83 g of water.
Learn more about yield:
brainly.com/question/2506978
#SPJ4
T/F : a device driver is a program that controls a device attached to the computer.
True. Another device driver is an application of software that manages an associated device's connection to the computer.
Describe a computer.A machine is a computing device typically accepts data in the manner of digitally enhanced data and processes it in accordance with a program, piece of software, or set of directions that specify how the information should be handled. Data is replicated from the main memory of the computer, then it is transferred to the hard drive. The range of equipment that writes data toward the disk is known as the drive.
How are computers operated?A computer, an electronic information device, functions by transforming information into binary data (ones and zeros), which are then rearranged into sentences or actions using simple arithmetic.
To know more about computer visit:
https://brainly.com/question/14971369
#SPJ4
a sample of sandstone consists of only silica (sio2) and calcite (caco3). when sandstone is heated, calcium carbonate decomposes to calcium oxide and carbon dioxide. silica does not decompose. a 19.5 mg sample of the sandstone rock yields 3.95 mg of carbon dioxide. what is the percentage of silica in the sandstone rock?
To calculate the percentage of silica in the sandstone rock, we need to first calculate the mass of silica in the sample. We can use the Law of Conservation of Mass to do this. The equation for this law is mass of reactants = mass of products.
In this case, the reactants are 19.5 mg of the sandstone rock and 3.95 mg of carbon dioxide. So the mass of silica in the sample is 19.5 - 3.95 = 15.55 mg.
To calculate the percentage of silica in the rock, we need to divide the mass of silica (15.55 mg) by the total mass of the sample (19.5 mg) and then multiply that by 100. So the percentage of silica in the rock is 15.55/19.5 * 100 = 79.87%.
Learn more about Conservation of Mass
https://brainly.com/question/27891057
#SPJ4
HELPPPP IM GIVING 95 POINTS FRICKING HURRY
Answer:
C
Explanation:
As we can see here the precipitation spikes in June and the evaporation amount starts to increase. Let's test these 4:
A:
'The lake level will drop because there is more evaporation than precipitation'
As we can see, there is more precipitation than evaporation, so A is not correct.
B:
The lake level will drop because there is more precipitation than evaporation
Evaporation means that water (literally) disappears into thin air, so B would not be correct, as precipitation raises the water level
C:
The lake level will rise because there is more precipitation than evaporation
This is the correct answer, since 1) there is more precipitation than evaporation in June and 2) it makes sense that the lake level will rise with more precipitation.
There we have it! The answer is: C
a certain substance condenses at a temperature of . but if a sample of is prepared with of urea dissolved in it, the sample is found to have a condensation point of instead. calculate the molal boiling point elevation constant of . round your answer to significant digits.
Once you have calculated Boiling point Kb, you can round your answer to the appropriate number of significant digits based on the number of significant figures in the given values of x, T1, and T2.
The change in boiling point of a solution with a solute dissolved in it can be calculated using the equation for boiling point elevation:
ΔTb = Kb * molality
where ΔTb is the change in boiling point, Kb is the molal boiling point elevation constant, and molality is the concentration of the solute expressed in mol/kg.
Given that the substance condenses at T1, and that the sample with urea dissolved in it has a condensation point of T2, we can use these two temperatures to find ΔTb:
ΔTb = T2 - T1
We can then rearrange the equation for boiling point elevation to find Kb:
Kb = ΔTb / molality
We need to know the molality of the urea solution to find Kb. The molality can be calculated from the mass of the solute and the mass of the solvent:
molality = moles of solute / mass of solvent (in kg)
Since we are given that the sample contains x g of urea dissolved in it, we can calculate the moles of urea as:
moles of solute = x g / molar mass of urea
And the mass of the solvent can be calculated as:
mass of solvent = (mass of sample - x g) / 1000 g/kg
Putting everything together, we get:
Kb = ΔTb / (x g / molar mass of urea) / ((mass of sample - x g) / 1000 g/kg)
Note: The units of Kb are usually K/molal or °C/molal, so make sure to use consistent units when working through the calculation.
To learn more about Boiling point :
https://brainly.com/question/14121629
#SPJ4
what mineral group is most important for the production of drywall used in residential home construction?
The most important mineral for making the drywall used for the residential home construction is gypsum.
Describe gypsum.The soft sulfate mineral gypsum has the chemical formula CaSO4.2H2O and is made up of calcium sulfate dihydrate. It is widely mined, used as fertilizer, and the primary component of numerous plaster, sidewalk or blackboard chalk, and drywall products.
Where can one find gypsum?Gypsum may be found as beautiful crystals and as thick layers within shale. Gypsum deposits are never entirely pure. It is typically discovered in deposits that contain a mixture of limestone, sand, shale, anhydrite, and occasionally rock salt.
To know more about gypsum visit :
https://brainly.com/question/18369612
#SPJ4
In an experiment searching for the photoelectric effect, an incident beam of green light did not eject any electrons from a metal. in order to eject electrons, the experimenter should?
In an experiment searching for the photoelectric effect, an incident beam of green light did not eject any electrons from a metal. in order to eject electrons, the experimenter should try blue light.
The Process of the Photoelectric EffectYou need to know that in the photoelectric effect the concept of dualism of light is applied, namely the concept of continuous wave-shaped light. Well, according to Einstein, light consists of packets or light particles (photons).
A photon itself has an energy equal to Planck's constant (h) multiplied by its frequency. In addition, Planck's constant (h) is a constant whose value is always correct. That way, the energy inside the photon will always increase according to its frequency.
The mechanism for the photoelectric effect on a metal starts with light hitting the metal. Then, the light will penetrate the metal material. Where, the photons will meet the electrons that are in the metal.
Learn more about photoelectric at
https://brainly.com/question/26465043
#SPJ4
if 4.8 g of an unknown sample is measured, how much of that unknown sample is possible to recover? show your work.
It is possible to recover 4.8 g of the unknown sample if 4.8 g of an unknown sample is measured.
Writing and balancing a chemical equation is required when a substance undergoes a chemical (or physical) change. The conservation of mass principle states that no matter may be created or destroyed by a chemical reaction. The carbon atom in sample of coal, for instance, changes into carbon dioxide as it burns. The mass of a carbon atom remains constant even as it transforms from a solid to a gas. Even when atoms interact to create new products during a chemical reaction, mass is maintained. This is true since the new substances were created using the atoms from the reactants.
To learn more about mass click here https://brainly.com/question/15959704
#SPJ4
if a reaction vessel initially contains an concentration of 0.0500 m at 500 k, what are the equilibrium concentrations of and at 500 k?
If the reaction vessel initially contains the N₂O₄ concentration of 0.0550 m at 500 k , the equilibrium concentrations at 500 K of the N₂O₄ is 0.0115 M and NO₂ is 0.0769 M.
The equation is as :
N₂O₄ ⇄ 2NO₂
initial 0.0500 0
-2x + 2x
Eq. 0.0500 - x 2x
Kc = [NO₂]² / [ N₂O₄ ]
0.513 = (2x)² / 0.0500 - x
0.513 = 4x² / 0.0500 - x
x = 0.038
Therefore, the concentration of [ N₂O₄ ] = ( 0.0500 - 0.038 ) = 0.0115 M
The equilibrium concentration of [NO₂] = 2 (0.038) = 0.0769 M
This question is incomplete , the complete question is :
If a reaction vessel initially contains an N₂O₄ concentration of 0.0550 m at 500 k , what are the equilibrium concentrations of N₂O₄ and NO₂ at 500 k ?
To learn more about equilibrium here
https://brainly.com/question/29101756
#SPJ4
what product is formed when the following acetal is hydrolyzed with aqueous acid? hint, do the mechanism at home and draw it ou
The product formed when the acetal is hydrolyzed with aqueous acid is [tex]R-CH(OH)-O-CH(OH)-R[/tex]
What is acetal hydrolization with acqueous acid?The product formed when the acetal is hydrolyzed with aqueous acid is two molecules of alchohol namely [tex]R-CH2-OH and R-CH2-OH.[/tex] This occurs as aqueous acid catalyzes the hydrolysis of the acetal bond, which breaks the bond between the two alcohol groups and releases them as individual molecules.
The hydrolysis of the acetal bond involves the acid protonating the oxygen atom, resulting in the formation of a positively charged oxonium ion. The positively charged oxonium ion then attracts a lone pair of electrons from an adjacent oxygen atom, resulting in the formation of a new bond between the two alcohol groups and the release of the two alcohol molecules.
To know more about acetal hydrolization, check out:
https://brainly.com/question/9652379
#SPJ4
If the pressure of 100cm3 of a sample of air is doubled at constant temperature, what will be its new volume
Answer:
For a fixed mass of gas at constant temperature, the volume is inversely proportional to the pressure. That means that, for example, if you double the pressure, you will halve the volume. If you increase the pressure 10 times, the volume will decrease 10 times.
Explanation:
why are the 3p and 3s quantum states in an isolated silicon atom transformed into the valence and conduction bands in a silicon crystal ?
The isolated silicon atom's 3p and 3s quantum states were converted into the valence and conduction bands in a silicon crystal. Because each atom [Si, Ge] has four neighbors.
The atom is the smallest unit of matter that can be divided without releasing electrically charged particles. It is also the smallest unit of matter with the chemical element's properties. As such, the atom is the fundamental unit of chemistry. Examine various electron configurations in electron shells surrounding the nucleus of an atom. Examine various electron configurations in electron shells surrounding the nucleus of an atom.
The rest is made up of a positively charged nucleus of protons and neutrons surrounded by an electron cloud. In comparison to electrons, which are the lightest charged particles in nature, the nucleus is small and dense. Electrons are attracted to any positive charge due to their electric charge.
Learn more about atom here:
https://brainly.com/question/13518322
#SPJ4
the half life of phosphorus-33 is 25 days. How much of a 128 g sample will remain after 140 days?
a) 2.6
b) 2.0
c) 1.0
d) 8.0
The amount of a radioactive sample remaining after any given time can be calculated using the equation A=A0*(1/2)^n, where A is the amount remaining, A0 is the initial amount, and n is the number of half-lives passed.
In this case, A0 = 128 g, n = 5.6 (140 days / 25 days = 5.6).
A = 128 * (1/2)^5.6 = 2.0 g
What is radioactive?
Radioactive is a term used to describe certain elements that emit radiation, typically alpha and beta particles or gamma rays. These elements are unstable and have excess energy, which they release in the form of radiation to become more stable. Radioactive elements have a variety of uses, such as in medical imaging, smoke detectors, and the production of nuclear energy. Radioactivity is also used in carbon dating and to date geological samples. Radioactive elements can be found in nature, but can also be created artificially in nuclear reactors or particle accelerators. These materials can be dangerous if not handled properly, and long-term exposure to radiation can have serious health consequences.
Therefore, option B is correct.
To learn more about radioactive
Here: https://brainly.com/question/9932896
#SPJ1
What is the change in kinetic energy due to this movement? answer in units of j.
The change in kinetic energy (ΔKE) is given by the equation ΔKE = [tex]1/2 * m * v^2[/tex], where m is the mass of the object and v is its change in velocity.
To find the change in kinetic energy, we need to know the initial and final velocity of the object, as well as its mass. If we are given this information, we can use the equation to find the change in kinetic energy. It is important to note that the change in kinetic energy can be positive or negative, depending on the direction of the velocity change. If the velocity of an object increases, its kinetic energy will also increase, and the change in kinetic energy will be positive. On the other hand, if the velocity of an object decreases, its kinetic energy will decrease, and the change in kinetic energy will be negative. In conclusion, to find the change in kinetic energy due to a movement, we need to know the mass of the object, its initial and final velocity, and use the equation ΔKE = [tex]1/2 * m * v^2[/tex].
Learn more about kinetic energy here:
https://brainly.com/question/26472013
#SPJ4
active transport usually moves molecules a. in the same direction as diffusion moves them. b. in a direction opposite to the one in which diffusion moves them. c. in a direction that tends to bring about equilibrium. d. from a solution with a lower ph toward one with a higher ph. e. from inside the cell to outside the cell.
Active transport usually moves molecules b. in a direction opposite to the one in which diffusion moves them. Therefore, the option b is the correct answer.
What is Diffusion?The movement of particles in a substance from a high concentration to a low concentration is called diffusion. Diffusion allows the movement of chemicals into and out of cells.
Two Types of Transport in the Cell MembraneThere are two types of molecule movements in a cell membrane: (1) active transport and (2) passive transport.
Active TransportActive transport is the movement of molecules across a membrane against a concentration gradient. Therefore, active transport usually moves molecules in a direction opposite to the one in which diffusion moves them. It move from an area of lower concentration to a higher concentration area. It frequently uses enzymes and is energy-intensive.
Passive TransportPassive transport is the movement of molecules from an area of higher concentration to a region of lower concentration, energy is not needed for the transport of the molecules. Passive transport is used to transfer all easily soluble particles. This process is used to keep a cell's equilibrium level and state of balance.
Here to learn more about Diffusion:
https://brainly.com/question/94094
#SPJ4
At conditions of Standard Temperature and Pressure, determine how many liters of hydrogen gas are produced by placing a zinc nail with a mass of 2.2g into an excess of hydrochloric acid.
A) 0.0015L
B) 0.75L
C) 1.33L
D) 6.42L
Putting a 2.2g zinc nail into an excess of HCl produces 0.75 L of H2 under standard conditions of temperature and pressure.
What are the standard pressure and temperature?Standard temperature & pressure, also, sometimes known as STP, refers to the ideal atmospheric conditions above sea level. The conditions are 0 degrees Celsius & 1 atmosphere, respectively.
The balancing equation states that 1 mole of Zn interacts to yield 1 mole of hydrogen.
While operated under standard temperature and pressure, 1 mole of a gas will occupy 22.4 L.
Hence:
22.4 L of Hydrogen gas are produced when 1 mole of Zinc reacts.
Here, mass of Zinc = 2.2 g
Molar mass of Zn = 65 g
Moles of Zinc = mass of Zinc / molar mass
Moles of Zn = 2.2 / 65
Moles of Zn = 0.0335 mol
Zn interacts with 0.0335 mol to produce, 0.0335 *22.4 L of H2.
= 0.75 L of H2
To know more about standard temperature and pressure visit :
https://brainly.com/question/14820864
#SPJ4
The complete question is -
Zn + 2HCl → ZnCl2 + H2
At conditions of Standard Temperature and Pressure, determine how many liters of hydrogen gas are produced by placing a zinc nail with a mass of 2.2g into an excess of hydrochloric acid.
A) 0.0015 L B) 0.75 L C) 1.33 L D) 6.42 L
Which observation would provide the best evidence that matter is conserved in the reaction of Na and H2O?
Responses
The number of atoms of Na are the same on both sides of the equation
The number of protons and electrons in Na are equal to the protons and electrons in H and O
The number of protons and electrons in Na are equal to the protons and electrons in H and O
The mass of the Na and H2O is less than the mass of hydrogen produced.
When sodium is placed into water it bursts into flames
The atoms are the same on both side of the equation. Option A
What is the law of conservation of mass?This law was first stated by Antoine Lavoisier in the late 1700s and is one of the most fundamental laws of chemistry. It is based on the idea that matter cannot be created or destroyed, only transformed from one form to another.
It is used to explain the behavior of chemical reactions, to balance chemical equations, and to understand the behavior of physical systems and the transfer of energy within those systems.
Learn more about conservation of mass:https://brainly.com/question/13383562
#SPJ1
which of the following best characterizes ferromagnesian silicates?group of answer choicesthey contain iron and magnetite, are black in color, and they have metallic lusters.they contain magnetite and ferroite, and they are clear to light green.they are black to dark-green silicate minerals containing iron and magnesium.they are mostly clear, colorless, and rich in the elements magnesium and ferrium.
The sentence from the given options which best characterizes ferromagnesian silicates are they are black to dark-green silicate minerals containing iron and magnesium.
Ferromagnesium silicate minerals refer to those minerals that have iron and magnesium cations in their composition. Ferromagnesium silicate minerals have relatively high density and produce dark mineral colors. For example, the common ferromagnesian silicate minerals are as follows: Pyroxene.
The dark silicates which are also known as ferromagnesian due to the presence of iron and magnesium in them. Ferromagnesian silicates include olivine, pyroxene, amphibole and biotite. The examples of light-colored silicates includes quartz, muscovite, amphibole and feldspar.
Learn more about Ferromagnesium silicate minerals from the link given below.
https://brainly.com/question/11200427
#SPJ4
cinnamaldehyde is less polar than limonene because it has more carbon atoms.
It is false that while cinnamaldehyde contains more carbon atoms than limonene, it is less polar. Limonene comprises 10 carbons, compared to 9 for cinnamaldehyde.
What is the purpose of cinnamaldehyde?Foods like sweets and cookies often contain cinnamaldehyde as a flavoring, and it also serves as an odorant in perfumes. Additionally, it has been employed to get rid of mosquitoes and deter mosquito larvae. It is appropriate for sustainable production because it happens naturally.
Cinnamaldehyde: Is it organic?The chemical cinnamaldehyde is found naturally in the skin of cardamom trees and some other Cinnamomum species, including camphor and cassia. The above trees are the actual source of cardamom, and cinnamaldehyde makes up roughly 90% of the active ingredient of cinnamon bark. As a fungicide, cinnamaldehyde is also employed.
To know more about cinnamaldehyde visit:
https://brainly.com/question/5586116
#SPJ4
what is the name of the chemical with the formula sf6?
Based on the supplied description, sulfur hexafluoride is the name of the chemical the with formula SF6.
What exactly is SF6 used for?An artificial, odorless gas called SF6 is utilized in the energy sector to maintain the security and dependability of networks. Because it is highly stable, non-toxic, inflammable, and electronegative, it won't combine with other substances that would change how it behaves or how effective it is.
Is SF6 gas dangerous to people?* When in contact with the skin, sulfur hexafluoride might irritate it and cause a rash or burning sensation. Frostbite can result from direct skin contact, and sulfur hexafluoride can burn the eyes severely and permanently. Sulfur hexafluoride inhalation can irritate the esophagus and nose.
To know more about SF6 visit:
https://brainly.com/question/27929613
#SPJ4
in oder to break a bond, energy must be ?
a released
b removed
c absorbed
d produced
At equilibrium, there will be no net movement of molecules across the cell membrane.1. True2. False
The above statement is accurate since at equilibrium there won't be any net flow of molecules through the cell membrane.
Which molecules were they?A cell is the smallest part of a material that keeps its makeup and characteristics. It is made up of two or maybe more atoms that are joined together by hydrogen bonds. Chemistry is built on molecules. The material symbol and a prefix stating the number of electrons are used to identify molecules.
Water: A Chemical or Not?Molecules are created when atoms come together. Two hydro (H) ions and one oxide (O) atom make up the three atoms that form up a water molecule. Because of this, water is sometimes abbreviated as H2O. There are millions of water molecules in a single drop of liquid.
To know more about molecule visit:
https://brainly.com/question/26933336
#SPJ4
true or false. aldehydes have a central carbon bound to two other carbons
The statement is false about aldehydes that have a central carbon bound to two other carbons.
Why is it referred to as aldehyde?All aldehydes possess a double bond between carbon and oxygen, which is termed to as the carbonyl group. Many aldehydes have pleasant aromas, and in principle, they are made from alcohols by the process of dehydrogenation (removal of hydrogen), which is how the word "aldehyde" originated.
What are the uses of aldehydes?Aldehydes are versatile substances that can be utilized to create resins, dyes, organic acids, as well as detergents, soaps, and scents for cologne. Formaldehyde is the aldehyde that is most frequently generated industrially. According to research, cinnamonaldehyde is a natural health molecule that is administered to treat both diarrhoea and the common cold.
Learn more about aldehydes here:
brainly.com/question/29756072
#SPJ4
How was it determined that all of the CuSO4 was converted into copper metal:???
Need help please
Answer:
Explanation:
The conversion of CuSO4 into copper metal can be determined by measuring the mass of the reaction mixture before and after the reaction.
The balanced chemical equation for the reaction between CuSO4 and zinc metal is:
CuSO4 + Zn → ZnSO4 + Cu
In this reaction, the number of moles of CuSO4 used is equal to the number of moles of copper produced. If all the CuSO4 is converted into copper metal, the mass of the CuSO4 will decrease by the same amount as the increase in the mass of the copper produced.
By measuring the mass of the reaction mixture before and after the reaction and comparing the masses, we can determine if all the CuSO4 has been converted into copper metal. If the mass of the reaction mixture has increased by the same amount as the mass of the copper produced, we can conclude that all the CuSO4 has been converted into copper metal.
This method is called the Law of Conservation of Mass, which states that the total mass of a system remains constant during a chemical reaction.
you titrate a 200 ml hbr solution with 0.5 m koh. if it takes 150 ml of koh to reach the equivalence point, what was the concentration of the original acid solution?
a.0,72M
b.0,38M
c.0,46M
d.0,67M
The original acid method's concentration would be 0.38M based on the assertion made.
Is HBr a strong or weak base?A proton (H) as well as a bromine atom can be found in HBr. It emits protons, which are just hydrogen ions, when forced to dissolve inside of an aqueous solution. The dissociation of hydrogen bromide is practically entirely complete. As a result, it is a powerful acid because, upon total dissociation, it releases hydrogen ions.
HBr + KOH -> KBr + H2O
moles of KOH = volume of KOH * concentration of KOH = 0.150 L * 0.5 mol/L = 0.075 mol
moles of HBr = moles of KOH = 0.075 mol
concentration of HBr = moles of HBr / volume of HBr = 0.075 mol / 0.200 L = 0.375 M = 0.38 M
So, the answer is 0.38 M (Option B).
To know more about hbr visit:
https://brainly.com/question/2194001
#SPJ4