Answers
As per the balanced reaction given, 2 moles or 64 g of oxygen gives 2 moles or 36 grams of water. Hence, 48.75 g of oxygen gives 27.42 g of water.
What is theoretical yield ?The theoretical yield of a reaction is the amount of product predicted based on the balanced chemical equation of the reaction. From this, the number of moles or mass of the product can be calculated from the given mass of reactants.
As per the balanced reaction, 2 moles of oxygen gives 2 moles of water.
mass of O₂ = 32 g/mol
mass of 2 moles = 64 g
molar mass of water = 18 g/mol
mass of 2 moles = 36 g.
Hence, 64 g of oxygen gives 36 g of water.
Mass of water produced by 48.75 g of oxygen gas is:
(48.75 × 36)/64 = 27.4 g.
Therefore, 27.4 g of water is produced by 48.75 g of oxygen gas.
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Related Questions
true/false. as magma rises through continental crust, partial melting of the continental crust [ select ] the sio2 content and viscosity of the magma, eventually forming andesitic-rhyolitic magmas.
Answers
The silica content and viscosity of the magma increase as it rises through the continental crust, finally generating andesitic-rhyolitic magmas as a result of partial melting of the crust. That's accurate.
An andesitic magma is what?Stratovolcanoes frequently release thick lava flows made of andesite magma, some of which can be several kilometers long. Strong explosive eruptions from andesite magma can also result in pyroclastic flows, surges, and massive eruption columns. At temperatures between 900 and 1100 ° C, andesites erupt.
Magma becomes andesitic in what way?Wet partial melting of the mantle results in the formation of andesitic magma. Water is in contact with the mantle beneath the ocean. The mantle will heat up and water will be forced into it when subduction, or continental plates sliding apart, takes place.
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If I started with 283 g of HgO and added heat until it was fully decomposed. I was left with 213 g of liquid Hg. How many grams of oxygen gas were bubbled out?
Answers
The mass (in grams) of oxygen gas that were bubbled out, given that 283 grams of HgO decomposed is 20.9 g
How do I determine the mass of O₂ that bubble out?We'll begin by writing the balance equation for the reaction. This is given below:
2HgO -> 2Hg + O₂
Molar mass of HgO = 200.59 + 16 = 216.59 g/molMass of HgO from the balanced equation = 2 × 216.59 = 433.18 g Molar mass of O₂ = 2 × 16 = 32 g/molMass of O₂ from the balanced equation = 1 × 32 = 32 gFrom the balanced equation above,
433.18 g of HgO decomposed to produce 32 g O₂
Now, we shall determine the mass of O₂ that will bubble out when 283 g of HgO decompose. Details below:
From the balanced equation above,
433.18 g of HgO decomposed to produce 32 g O₂
Therefore,
283 g of HgO will decompose to produce = (283 × 32) / 433.18 = 20.9 g of O₂
Thus, the mass of CO₂ that bubbled out is is 20.9 g
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determine the molarity of each ions present in a solution of 0.45M Ag3PO4 (assume 100% ionization)
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Since Ag3PO4 is a salt, it dissociates into ions when dissolved in water. Assuming 100% ionization, the equation for the dissociation of Ag3PO4 in water is as follows:
Ag3PO4 (s) → 3 Ag+ (aq) + [tex]PO4^{3-}[/tex] (aq)
From the given molarity of Ag3PO4, we can calculate the molarity of each ion in the solution:
Molarity of Ag+ = (3 moles of Ag+)/(1 mole of Ag3PO4) × 0.45 M = 1.35 M
Molarity of [tex]PO4^{3-}[/tex] = (1 mole of[tex]PO4^{3-}[/tex])/(1 mole of Ag3PO4) × 0.45 M = 0.45 M
So, the molarity of Ag+ ions in the solution is 1.35 M and the molarity of [tex]PO4^{3-}[/tex] ions in the solution is 0.45 M.
What is Molarity?The number of moles of solute present in a specific volume of solvent is measured by the concentration unit known as molarity. The symbol "M" stands for moles of solute per liter of solution, which is how it is stated. The term "molarity" is frequently used in chemistry to describe the concentration of a solution and plays a crucial role in figuring out how much of one reactant is required for a reaction to take place.
A chemical species' concentration in a solution, specifically the amount of a solute per unit volume of solution, is measured by its molar concentration. The number of moles per liter, denoted by the unit sign mol/L, is the most often used molarity unit in chemistry.
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upon heating 1123g MgSO4.7 H2O
how many grams of water can be obtained?
how many grams of anhydrous compound van be obtained?
Answers
determine the number of atoms of each element in the empirical formula of a compound with the following composition: 65.08 percent c, 10.14 percent h, 24.77 percent o.
Answers
The number of atoms of each element in the empirical formula of a compound is C7H13O2.
Empirical formula mass = 129 g/mol
Carbon atom =7
Hydrogen atom =13
Oxygen atom=2
The empirical formula is a representation of the simplest whole number ratio of atoms in a compound. It is derived from the results of chemical analysis and gives the smallest whole number ratio of elements in a compound. The empirical formula is not always equal to the molecular formula, which gives the actual number of atoms of each element in a molecule.
To find the empirical formula, the number of moles of each element in a sample must be determined. The moles of each element can be divided by the smallest number of moles to obtain the ratio of elements. This ratio is the empirical formula. The empirical formula can be used to identify unknown compounds, predict properties and reactivity, and provide information about the molecular structure.
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true/false. taq polymerase was isolated from a thermophile and is used in the polymerase chain reaction (pcr) technique because it does not become inactivated at high temperatures.
Answers
It is true that polymerase, which is employed in the polymerase chain reaction (pcr) method, was extracted from a thermophile.
Is it more likely that low temperatures than high ones may cause irreparable harm to bacterial cells?Because irreversible cell damage is more likely to happen at low temperatures than high ones, food is often refrigerated to minimize microbial development. Generally speaking, the ideal temperature is nearer to the minimum than the maximum.
Which statement demonstrates the modifications that hyperthermophilic proteins need to make in order to be active at temperatures higher than 80 °C?In order to stabilize the proteins, hyperthermophiles have more ionic bonds.
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find a 2nd degree interpolating polynomial p (x) for the points (-1,2), (1,3), (3,-1). then give the value for p (4).
Answers
The value for p (4) is -4.875 for a 2nd degree interpolating polynomial [tex]p(x)= \frac{-5x^2}{8} + \frac{(x)}{2} + \frac{(25)}{8}[/tex] for the points (-1,2), (1,3), (3,-1).
What are polynomial?
Algebraic expressions called polynomials include coefficients and variables. Indeterminates are another name for variables. For polynomial expressions, we can do mathematical operations like addition, subtraction, multiplication, and positive integer exponents but not division by variables. Polynomial is formed composed of the phrases Nominal, which means "terms," and Poly, which means "many." An expression that consists of variables, constants, and exponents that is combined using mathematical operations like addition, subtraction, multiplication, and division is referred to as a polynomial (No division operation by a variable). The expression is divided into three categories: monomial, binomial, and trinomial depending on how many terms are included in it.
Given points are (-1,2), (1,3), (3, -1).
Then 2nd degree polynomial p(x) [tex]=\frac{(x-1)(x-3)}{(-1-1)(-1-3)} *2 + \frac{(x+1)(x-3)}{(1+1)(1-3)}*3 +\frac{(x+1)(x-3)}{(3+1)(3-1)}*(-1)[/tex]
[tex]= \frac{(x^2-3x-x+3)}{(-2*-4)} *2 + \frac{(x^2-3x+x-3)}{(2*-2)}*3 +\frac{(x^2-x+x-1)}{(2*4)}*(-1)[/tex]
[tex]= \frac{(x^2-4x+3)}{4} - \frac{(x^2-2x-3)}{4}*3 -\frac{(x^2-1)}{8}[/tex]
[tex]= \frac{-5x^2}{8} + \frac{(x)}{2} + \frac{(25)}{8}[/tex]
Now,
[tex]p(x)= \frac{-5x^2}{8} + \frac{(x)}{2} + \frac{(25)}{8}[/tex]
[tex]p(4)= \frac{-5*4^2}{8} + \frac{(4)}{2} + \frac{(25)}{8}[/tex]
[tex]p(4)= \frac{-80}{8} + 2 + \frac{(25)}{8}[/tex]
[tex]p(4)= -10 + 2 + \frac{(25)}{8}[/tex]
[tex]p(4)= -8 + \frac{(25)}{8}[/tex]
[tex]p(4)= \frac{-64+25}{8}[/tex]
[tex]p(4)= \frac{-39}{8}[/tex]
[tex]p(4)= -4.875[/tex]
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An atom is composed of a very dense central ______ containing _______, which are positively charged, and neutrons, which have _______ electric charge.
Answers
Protons, which are positively charged, and neutrons, which have no electric charge, make up the very dense core nucleus of an atom.
"An atomic nucleus contains protons, which have positive charges," In reality, the protons and neutrons that make up an atomic nucleus are called nucleons. The charge of an atomic nucleus is mostly determined by the positive charge of the protons because neutrons are neutral or have no charge.
The smallest, indivisible unit that makes up the substance that gives rise to all chemical elements is referred to as an atom. As a result, atoms are frequently thought of as the basic units of matter, the structure of which defines the nature of a chemical element.
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I
Particle size:
250 mL
200
150
100
50
Using a graduated cylinder, fill a 250 mL beaker with 200 mL of water.
Reaction time:
seconds DONE
Answers
The volume of the object is obtained by the change in the volume of the liquid.
What is the displacement method of determining volume?The displacement method of determining volume involves measuring the change in fluid volume when an object is submerged in it. This method works by determining the volume of fluid that is displaced by the object, which is equal to the volume of the object itself. This method is often used to determine the volume of irregularly shaped objects.
Note that the use of the method of the displacement of the solid can only be used when we are dealing with a solid that is an irregular solid.
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which of the following is the balanced net ionic equation for an oxidation-reduction reaction between ag (aq) and ni(s) based on the half-reactions represented above?
Answers
Ni2+ = 2Ag(s)+(aq)+Ni(s) (aq) Based on the half-reactions, the balanced net ionic equation for an oxidation-reduction reaction between ag (aq) and ni(s) is 2Ag+(aq)+Ni(s) 2Ag(s)+Ni2+(aq).
What is produced by the reaction between solid copper and aqueous silver nitrate?The balanced equation below represents the reaction between solid copper and aqueous silver nitrate, which results in solid silver and blue solution: 2AgNO Cu(s) (aq) Cu(NO )(aq) (aq) 2Ag(s) based on the equation's balance.
What happens when potassium and strontium chloride are combined in water?A precipitate of strontium sulfate is created when aqueous strontium chloride (SrCl2) and aqueous potassium sulfate (K2SO4) react (SrSO4).
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Atmospheric pressure decreases as altitude increases. In other words, there is more air pushing down on you at sea level, and there is less air pressure pushing down on you when you are on a mountain.
If pentane (C5H12), hexane (C6H14), and hexanol (C6H13OH) are heated evenly at different altitudes, rank them according to the order in which you would expect them to begin boiling.
Rank from first to last. To rank items as equivalent, overlap them.
Answers
Pentane can simmer at quite a lower temperature then hexane because of the size difference between the two alkanes at sea level. In high altitude, hydrogen bonds cause phenol to have a higher boiling point.
What impact does distance have on hydrogen bonds?The typical value for hydrogen bonding between proteins and water is 3.0, with this distance often ranging between 2.7 and 3.3. Measuring the strength of a hydrogen bond also requires consideration of the angle that the bond forms. The strength of the hydrogen bond increases with hydrogen bond shape.
How far apart are hydrogen bonds formed?The average separation between the donor and the acceptor atoms in hydrogen bonding is between 2.7 and 3.3 Angstroms. Carbon-carbon separations are typically 3.3–4.0 Angstroms longer for hydrophilic groups (van der Waals bonds).
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fire: which of the following chemicals are considered to pose fire hazards in normal use? more than one answer may be correct. diethyl ether dichloromethane ethyl acetate ethanol acetone
Answers
The following chemicals are considered to pose fire hazards in normal use: diethyl ether, ethanol, acetone, and ethyl acetate.
Fire hаzаrds аre situаtions thаt could cаuse the ignition of combustible mаteriаl if left unchecked or uncontrolled. Fire hаzаrds аnd fire types will vаry from worksite to worksite, depending on the type of work being performed аnd the types of mаteriаl on locаtion.
What are the 4 types of fire hazards?Clаss А: solid mаteriаls such аs wood or pаper, fаbric, аnd some plаstics. Clаss B: liquids or gаs such аs аlcohol, ether, gаsoline, or greаse. Clаss C: electricаl fаilure from аppliаnces, electronic equipment, аnd wiring. Clаss D: metаllic substаnces such аs sodium, titаnium, zirconium, or mаgnesiumFrom the options, dichloromethаne is а combustible liquid with а sweet odour. It reаcts violently with metаls such аs аluminium powder, mаgnesium powder, strong bаses аnd strong oxidаnts, cаusing а fire аnd explosion hаzаrd. That's why dichloromethane can't suggest for daily use.
Your options aren't well arranged, but most probably your options were
A. diethyl ether
B. dichloromethane
C. ethyl acetate
D. ethanol
E. acetone
Thus, the correct options are A, C, D, and E.
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The various types of electromagnetic radiation are distinguished from each other by their....
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Answer:
The various types of electromagnetic radiation are distinguished from each other by their frequency or wavelength. The frequency of electromagnetic radiation is the number of oscillations of the electromagnetic wave per second, while the wavelength is the distance between two consecutive peaks of the wave. Electromagnetic radiation can have a wide range of frequencies and wavelengths, from radio waves with long wavelengths and low frequencies to gamma rays with short wavelengths and high frequencies. The different types of electromagnetic radiation include radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.
assume you have a proton in an atom, and that proton is surrounded by an electron shell where the charge is evenly distributed across the entire surface of the shell. the proton would feel
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A proton in an atom, and that proton is surrounded by an electron shell where the charge is evenly distributed across the entire surface of the shell. the proton would feel protons will feel a huge force of attraction
Atom is the smallest unit of matter that can stand alone or be combined. Inside the atomic nucleus are neurons and protons, and in the shells are sometimes found electrons that are negatively charged which are separated in their respective trajectories or orbits.
Protons are particles that make up atoms that are deep inside the atomic nucleus so that they cannot be disturbed by particles outside the qatom. Therefore the proton is a stable subparticle of the atom. The electrons in the atomic shells orbit the atomic nucleus and form chemical reactions through the coulomb force between electrons and protons so that electrons are bound to atoms.
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germicidal chemicals . multiple select question. are generally more reliable than heat have mechanisms of action that are well characterized usually react irreversibly with proteins, dna, cytoplasmic membranes, or viral envelopes are often poorly understood with regards to mechanisms of action
Answers
Germicidal chemicals generally:
Have mechanisms of action that are well characterized
React irreversibly with proteins, DNA, cytoplasmic membranes, or viral envelopes.
Germicidal chemicals are substances used to kill or eliminate microorganisms, including bacteria, viruses, fungi, and parasites. They are often used in healthcare settings, industrial processes, and households to disinfect surfaces and control the spread of infectious diseases. Germicidal chemicals work by breaking down or disrupting the structural components of microorganisms, such as proteins, DNA, cytoplasmic membranes, and viral envelopes. The mechanism of action of these chemicals is generally well understood, and they are designed to react irreversibly with these components, effectively killing the microorganisms. However, it is important to note that not all germicidal chemicals are created equal and some may have limited efficacy against certain microorganisms. Additionally, the choice of germicidal chemical will depend on the specific use-case and the desired outcome.
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A 0.500 g impure sample of LiNO3 is heated, causing it to decompose according to the following equation: 4LINO3(s) — Li,O(s) + 4NO2(g) + O2(g) The gases produced are collected over water at 27°C and 1.00 atm external pressure, and occupy a volume of 55.2 mL. Calculate the partial pressure of O, in the mixture? What is the percentage of LINO3 in the sample? The partial pressure of water is 26.7 mm Hg at 27°C.
Answers
The partial pressure of O2 and the percentage of LiNO3 in an impure sample after undergoing a decomposition reaction can be determined through the following steps:
Find the number of moles of gas produced: The volume of the gas mixture and its temperature are used to find the number of moles of gas using the ideal gas law.
Determine the partial pressure of O2: The number of moles of O2 produced is used in the ideal gas law to find its partial pressure.
Find the total pressure: The partial pressures of O2, NO2, and water are added to find the total pressure of the gas mixture.
Determine the percentage of LiNO3: The mass of LiNO3 in the original sample is calculated based on the number of moles of gas produced and its molar mass, and then divided by the total mass of the original sample to find the percentage of LiNO3.
The final answer is the partial pressure of O2 is 0.452 atm and the percentage of LiNO3 in the original sample is 43.5%.
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The Calculation to find the milligrams of ferrous ion, Fe^2+, in 325 mg (0.325 g) of anhydrous ferrous sulfate, FeSO_4, is 0.325 g FeSO_4 x 55.85 g Fe^2+/151.85 g FeSO_4
= 0.120 g Fe^2+
or 120. mg Fe^2+ 325 mg of which hydrate of iron (II) sulfate below contains 65 mg Fe^2+? This conforms to the label on the tablet box: 65 mg of Fe^2+ for every 325 mg "iron (II) sulfate"
A. FeSO_4*4H2O
B. FeSO_4*5H2O
C. FeSO_4*7H2O
D. FeSO_4*9H2O
Answers
The correct answer is C. [tex]FeSO_4*7H_2O[/tex], as it contains 65 mg of [tex]Fe^{2+}[/tex] for every 325 mg "iron (II) sulfate", which conforms to the label on the tablet box.
The number of water molecules in the hydrate affects the molar mass of the compound, and therefore, the number of moles of ferrous ion [tex]Fe^{2+}[/tex] in a given mass of the hydrate. So, by finding the molar mass of each hydrate, and then comparing the number of moles of [tex]Fe^{2+}[/tex] in each one, we can determine which hydrate contains 65 mg [tex]Fe^{2+}[/tex]. The anhydrous form of ferrous sulfate, [tex]FeSO_4[/tex] , contains only one molecule of [tex]Fe^{2+}[/tex] per formula unit. However, when it forms hydrates, it can contain multiple water molecules in addition to the [tex]FeSO_4[/tex] molecule. The number of water molecules in the hydrate affects the molar mass of the compound and therefore the number of moles of [tex]Fe^{2+}[/tex] in a given mass of the hydrate.
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The reaction of 2,2-dimethyl-1-propanol with HBr is very slow and gives 2-bromo-2-methylbutane as the major product. Give a mechanistic explanation for these observations.
Answers
A carbocation rearrangement with a methyl shift is the outcome of the process.
Methyl shift is the transfer of a methyl group from one charged carbon atom in a molecule to a nearby, uncharged carbon atom. If the changing chemical species is a methyl group, we refer to this as a methyl shift, albeit it might also be any other potential alkyl group.
These are the steps of reaction of 2,2-dimethyl-1-propanol with HBr
1) 2,2-dimethyl-1-propanol is protonated in the first step.
2) The removal of [tex]H_{2} O[/tex] results in the formation of a carbo cationic intermediate in the second step.
3) the methyl group is shifted to produce a more stable carbo cationic intermediate.
4) Br-Br-attacks the stable carbocation to produce 2-bromo-2-methylbutane.
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consider the reaction between solid caco3 and aqueous hcl. the reaction will be speeded up by an increase in which of the following conditions?
Answers
The reaction will speeded up by an increase in the frequency or energy of collisions between reactant molecules can lead to an increase in reaction rate.
The reaction between solid calcium carbonate (CaCO3) and aqueous hydrochloric acid (HCl) can be speeded up by an increase in temperature. This reaction is an exothermic reaction, meaning it releases heat. As the temperature increases, the reaction rate also increases, as the kinetic energy of the reactant molecules increases, making it easier for them to collide and react with one another. This results in an increase in the number of successful collisions per unit time, leading to a faster reaction rate. An increase in the concentration of hydrochloric acid will also speed up the reaction. This is because an increase in the concentration of HCl increases the number of H+ ions in solution, leading to more frequent collisions between H+ ions and CaCO3, resulting in a faster reaction rate.
In general, any factor that increases the frequency or energy of collisions between reactant molecules can lead to an increase in reaction rate.
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a student is trying to determine the heat of reaction for the acid-base neutralization reaction represented above. the student uses 0.50 m naoh and 0.50 m hcl solutions. which of the following situations, by itself, would most likely result in the least error in the calculated value of the heat of reaction?
Answers
Explanation:
Using a calorimeter with the highest possible accuracy to measure the heat of reaction.
millipore sigma links to an external site.is a large reputable chemical manufacturers who allow free access to their sds. chemicals can be found by simply typing their name in the search field on the top right of the webpage. find the sds link in the resulting webpage next to a chemical description that best fits what you will be using in lab. to demonstrate the variability of sds, look up the sds (using the links above) of the three dyes used in this project: allura red ac, tartrazine, and brilliant blue fcf. review sds sections 2 and/or 3 to answer the questions below. note: two of the dyes don't have sds on both sites.
Answers
According to the MilliporeSigma chemical manufacturers statement, we aim to promote global human health and quality of life for our clients. Leading life science products and services are required to uphold this promise.
What do Tartrazine and Allura red represent?Introduction. Azo dyes are frequently used to enhance the visual appeal of food by enhancing its look. Among these, the yellow colorant tartrazine (E102) and the red dye allure (E129) are frequently employed in beverages, juices, baked goods, meat, and sweets products.
Allura Red AC: Is it dangerous?AS DEFINED BY OSHA 29 CFR 1910.1200 AS A HAZARDOUS SUBSTANCE. Possibility of having permanent effects. Although it is not believed that ingesting the substance will have any negative effects, it could nevertheless have a negative impact on the person's health after consumption, especially if they already have organ damage.
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fill in the blank.in the case of toxic substances the standard measurement of toxicity is known as a ld50 the lethal dose causing the death of ___% of the organisms exposed to the substance
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Lethal Dose, or LD, is its initials. The lethal dose (LD50) of a substance is the dose of that substance that, when administered all at once, will kill 50% (or half) of a set of test animals.
In toxicology, why is LD50 significant?The median lethal dose (or LD50) is the amount of a test chemical that will kill 50% of the animals in a dose group. Industrial chemical acute hazard comparisons have been done using LD50 values.
What governs LC50 in its fundamentals?A substance's LC50 value is the concentration at which it will kill 50% of the tested organisms. Any exposure duration can have its LC50 established, although 96 hours is the most typical.
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From the following list of aqueous solutions and water, select the one with the highest boiling point.
A) 1.0 m KNO3
B) 0.75 m NaCl
C) 0.75 m CuCl2
D) 2.0 m C12H22O11 (sucrose)
E) pure water
Answers
CuCl2 has the greatest boiling point, according to the question given.
Why does water boil?Boiling point: The temperature at which a liquid's internal pressure equals the external pressure exerted by a liquid's vapour; at this temperature, the addition of heat causes the liquid to turn in its vapour without rising the temperature.
We know that elevation in boiling point = i x Kb x m
therefore,
dTb = i x Kb x m
We are known that water will boil at 100 C.
So,
Tb -100 = i x Kb x m
Tb = 100 + ( I x Kb x m)
now Kb is a constant
Therefore,
Tb is depend on the outcome of I x m.
So,
A) 1 m KN03
KN03 ----> K+ + N03-
two species in the product after dissociation , so i =2
i x m = 2 x 1 = 2
B) 0.75 NaCl
NaCl ---> Na+ + Cl-
i =2
So,
i x m = 2 x 0.75 = 1.5
C) 0.75 m CuCl2
CuCl2 ----> Cu+2 + 2Cl-
i=3
So,
I x m
= 3 x 0.75
= 2.25
D) 2 m sucrose
sucrose is non electrolyte so i=1
i x m = 2 x 1 = 2
E) for pure water
Tb = 100 C
So,
CuCl2 has the highest I x m product.
Hence,
CuCl2 has the highest boiling point
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Which of the following compounds has the largest lattice energy?a. CsIb. CsFc. LiFd. LiIe. MgO
Answers
The correct option is E. MgO of the following compounds has the largest lattice energy.
Lattice energy can be defined as the electricity required to convert one mole of an ionic strong into gaseous ionic constituents. as a substitute, it is able to be described as the power that need to be furnished to one mole of an ionic crystal so that it will separate it into gaseous ions in a vacuum thru an endothermic procedure.
In chemistry, the lattice strength is the power change upon formation of 1 mole of a crystalline ionic compound from its constituent ions, which are assumed to to start with be inside the gaseous kingdom. it's miles a measure of the cohesive forces that bind ionic solids. "it is also referred as lattice enthalpy.
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calculate a value for the equilibrium constant for the reaction below. (hint: when reactions are added together, the equilibrium expressions are multiplied.)
Answers
The angle of depression from the goldfinch to the base of the pole is 32°
What is the distance between the goldfinch and the base of the pole?
Give your answer to 2 d.p.
How many moles of particles per liter in 0.591 M LiF?
Answers
Answer:
Below
Explanation:
Each liter contains .591 moles
each mole is 6.02 x 10^23 particles
.591 x 6.02 x 10^23 = 3.56 x 10^23 particles
1 2 3 4 5 6 7 8 9 10 Nuclear energy can be used to power _______. a. street lights b. businesses c. homes d. all of the above Please select the best answer from the choices provided A B C D
Answers
Answer:
all of the aboveeee
given 9.26 moles of NaN3, how man moles of N2 are produced?Please look at screenshot.
Answers
Based on the mole ratio of the reaction, the moles of N₂ that are produced is 13.89 moles of N₂.
What is the number of moles of N₂ that can be produced from 9.26 moles of NaN₃?The number of moles of N₂ that can be produced from 9.26 moles of NaN₃ is determined from the equation of the reaction.
The equation of the reaction is given below:
2 NaN₃ ----> 2 Na + 3 N₂
The mole ratio of NaN₃ to N₂ is 2 : 3
The moles of N₂that are produced = 9.26 * 3/2
The moles of N₂ that are produced = 13.89 moles.
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Each of the following reactions shows a solute dissolved in water. Classify each solute as strong electrolyte, weak electrolyte, or nonelectrolyte.
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Strong Electrolytes Weak Electrolytes Nonelectrolytes
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In chemistry, a solute is a substance that is dissolved in a solvent, usually water, to form a solution. Electrolytes are solutes that can conduct electricity in solution.
There are three types of electrolytes:
Strong Electrolytes: These are substances that completely ionize in solution, meaning they dissociate into separate ions. Examples of strong electrolytes include strong acids like hydrochloric acid (HCl), strong bases like sodium hydroxide (NaOH), and most salts like sodium chloride (NaCl).
Weak Electrolytes: These are substances that partially ionize in solution, meaning they only partially dissociate into ions. Examples of weak electrolytes include weak acids like acetic acid (CH3COOH) and weak bases like ammonia (NH3).
Nonelectrolytes: These are substances that do not ionize in solution and do not conduct electricity. Examples of nonelectrolytes include sugar (C12H22O11) and ethanol (C2H5OH).
It is important to note that the strength of electrolytes can be affected by factors such as the concentration of the solution, temperature, and the presence of other solutes.
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Two students each measured the density of a quartz sample three times: Student A Student B 1. 3.20 g/mL 2.82 g/mL The density found in the Handbook 2. 2.58 g/mL 2.48 g/mL of Chemistry and Physics for quartz 3. 2.10 g/mL 2.59 g/mL is 2.65 g/mL mean 2.63 g/mL 2.63 g/mL. Are the errors for these students random or systematic? Explain.
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The errors in the observations of students are random errors as there is no co linearity in the observations.
What are errors?Errors in chemical analysis result when there is a difference between observed value and the true value.If the magnitude of errors is large , it results in decrease in accuracy, reproducibility, and precision.
There are three types of errors:1) random error 2) systematic error 3) human error.The cause of random errors are difficult to quantify while the human errors can be minimized by taking a range of readings to reduce the error.
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