Instructions: 1. Select an ionic compound (has to contain a cation and an anion) with a polyatomic anion and calculate its percent composition. 2. Use the percent composition values calculated in 1 to confirm the empirical formula. For each calculation indicate the steps and use the appropriate units.

Q: 8. Determine the number of CH₂Cl2 molecules in 42.463 g of CH₂Cl₂. The molar mass of CH₂Cl2 is…

A: Avagadro's law states that 1.0 mole of any substance Avagadro number () of species.Number of moles =…

Q: 95: A 1.45-g sample of phosphorous burns in air and forms 2.57 g of a phosphorous oxide. Calculate…

A: When phosphorus burns in the air, it absorbs oxygen gas which results in the formation of oxide. The…

Q: Calculate the molar mass of each substance. (show solution) H3PO4 CaCO3 (NH4)2SO4 C4H9O2

A: Molar mass means the masses of all the atoms in the moleculeadded together.

Q: 2. A compound contains 76.56% C, and 6.43% H. The molar mass of the compound is 282.0 g/mol.…

A:

Q: 1. Complete the table below: Name Formula Molar Mass (include units!) sodium sulfate C3N4 magnesium…

A: This question is related to nomenclature part of chemistry. The name of compound is written using…

Q: A compound consisting of B, N, and H undergoes elemental analysis. The % composition by mass is…

A: Given,Percent of B in the compound = 40.28 %Percent of N in the compound = 52.20 %Percent of H in…

Q: . What is the percent by mass (percent composition) of each element with then the compound magnesium…

A: 1) What is the percent by mass (percent composition) of each element with then the compound…

Q: . Determine the empirical formula of a compound with the following mass percent composition: 8.88%…

A:

Q: A 13.80 g sample of a compound contains 8.81 g of iron, Fe, 1.63 g of phosphorus, P, and oxygen, O.…

A: Step 1: The empirical formula, the simplest formula for a compound, is the ratio of subscripts of…

Q: Calculate the number of moles containing each of the following. Express your answer with…

A: Mole represent the quantity of fundamental particle

Q: formula mass MgBr2.

A:

Q: The principal components in air are oxygen, nitrogen, argon, and carbon dioxide. Air is…

A: The air is composed of 78% nitrogen gas, 21% oxygen gas, 0.93% Argon gas and 0.04% carbon dioxide…

Q: MOLAR MASS CALCULATION: Element Symbol No. of Atoms Atomic Mass Mass Contribution X %3D X X %3D…

A: Molecular formula of Compound is Al2(SO4)3  Atomic mass :-  Al = 26.982 u , S = 32.065 u , O =…

Q: Complete the following questions for your experiment 5 lab. You may use a separate paper. You can…

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Q: 1. How many moles of Na are there in a sample that contains 6.16×1022 sodium atoms? moles 2. How…

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Q: 22 A compound consists of 40.00% carbon, 6.71% hydrogen and 53.29% oxygen and has a molecular mass…

A:

Q: Measurements show that unknown compound X has the following composition: element nitrogen oxygen…

A: Empirical formula of a chemical compound is the simplest whole number ratio of atoms present in a…

Q: The formula mass of any compound is described in units of moles. amu. grams per mole. grams.

A: The objective of this question is to identify the units of mass of the  compound.

Q: 27. A compound is 75.7% arsenic and 24.3% oxygen by mass. empirical formula? 75.7 What is the

A: Given, mass of arsenic(As) = 75.7 % = 75.7 g mass of oxygen(O) = 24.3 % = 24.3 g

Q: Suppose that a compound containing copper and chlorine contains 0.01139 moles of copper and 0.03813…

A: According to the question:  moles of copper in compound = 0.01139 moles moles of chlorine in…

Q: What is the empirical formula of a compound of carbon, hydrogen, and Oxygen that contains 51.56% and…

A: Given:: %C = 51.56%  %H = 14.09 % then, empirical formula = ?

Q: Calculate the molar mass of a compound if 0.400 mole of it has a mass of 308.0 g.

A: Given :- no.of moles of compound = 0.400 mol  Mass of compound = 308.0 g  To calculate :-  Molar…

Q: 1. What is the percent by mass (percent composition) of each element within the compound magnesium…

A: Hi, Since you have posted multiple questions, we will solve first question only. If you want, all…

Q: 22) An 85.5-g sample of Hg in a barometer 23) A 0.251-g Ti metal heart valve 24) A 10.0-g sample of…

A: 22) Given: Mass of Hg = 85.5 g Atomic mass of Hg = 200.59 g/mol.

Q: 6. Borax is a naturally occurring compound that is used in the manufacture of optical glasses.…

A:

Q: Analysis of a compound shows that it contains 43% Ti and 57% S.  Determine the empirical formula of…

A: Determination of empirical formula The percentage composition of elements present in given compound…

Q: 11.An unknown compound is comprised of 25.9% N and 74.1% O. The molecular mass of the compound is…

A: Answer

Q: Calculate the percent composition of each compound. show solution please answer all Calcium acetate…

A: The percent composition of a compound can be defined as the percent by mass of each element present…

Q: Please check my work. Given: Aluminum is 38.00% by mass, Silicon is 13.18% by mass, and Oxygen is…

A: The answer is given below:

Q: a) Number of atoms found in 2.1 mol of N2 b) 1 mol of H2SO4 c) Scientific notation. *Write the…

A: To solve this problem we have to calculate the percentage of all the elements in Tylenol .

Q: Calculate the number of CC atoms in 0.997 molmol of CC.

A: We know that the total number of atoms in 1mole of a substance is constant that is the avogadro's…

Q: If the molecular weight of the compound is 58.12 g / mol , what is the molecular formula of the…

A: We have to determine the chemical formula of the compound.