If Avogadro's number of pennies is divided equally among the 321 million men, women, and children in the United States, how many dollars would each receive?

Calculate the following quantities: (a) mass, in grams, of 0.105 mol sucrose (C₁₂H₂₂O₁₁)

Calculate the following quantities: (b) moles of Zn(NO₃)₂ in 143.50 g of this substance

Calculate the following quantities: (d) number of N atoms in 0.410 mol NH₃

Calculate the following quantities: (c) number of molecules in 8.447⨉10⁻² mol C₆H₆

Calculate the following quantities: (d) number of O atoms in 6.25⨉10⁻³ mol Al(NO₃)₃

(b) How many moles of chloride ions are in 0.2550 g of aluminum chloride?

(d) What is the molar mass of cholesterol if 0.00105 mol has a mass of 0.406 g?

(a) What is the mass, in grams, of 1.223 mol of iron(III) sulfate? (b) How many moles of ammonium ions are in 6.955 g of ammonium carbonate? (c) What is the mass, in grams, of 1.50 * 1021 molecules of aspirin, C9H8O4?

(d) What is the molar mass of diazepam (Valium®) if 0.05570 mol has a mass of 15.86 g?

The molecular formula of allicin, the compound responsible for the characteristic smell of garlic, is C₆H₁₀OS₂. (b) How many moles of allicin are present in 5.00 mg of this substance?

The molecular formula of allicin, the compound responsible for the characteristic smell of garlic, is C₆H₁₀OS₂. (c) How many molecules of allicin are in 5.00 mg of this substance?

The molecular formula of aspartame, the artificial sweetener marketed as NutraSweet®, is C₁₄H₁₈N₂O₅. (a) What is the molar mass of aspartame?

The molecular formula of aspartame, the artificial sweetener marketed as NutraSweet®, is C₁₄H₁₈N₂O₅. (c) How many molecules of aspartame are present in 1.00 mg of aspartame?

The molecular formula of aspartame, the artificial sweetener marketed as NutraSweet®, is C₁₄H₁₈N₂O₅. (d) How many hydrogen atoms are present in 1.00 mg of aspartame?

A sample of glucose, C₆H₁₂O₆, contains 1.250×10²¹ carbon atoms. (c) How many moles of glucose does it contain?

A sample of the male sex hormone testosterone, C₁₉H₂₈O₂, contains 3.88×10²¹ hydrogen atoms. (b) How many molecules of testosterone does it contain?

A sample of the male sex hormone testosterone, C₁₉H₂₈O₂, contains 3.88×10²¹ hydrogen atoms. (c) How many moles of testosterone does it contain? (d) What is the mass of this sample in grams?

The allowable concentration level of vinyl chloride, C₂H₃Cl, in the atmosphere in a chemical plant is 2.0×10⁻⁶ g/L. How many moles of vinyl chloride in each liter does this represent?

The allowable concentration level of vinyl chloride, C₂H₃Cl, in the atmosphere in a chemical plant is 2.0⨉10⁻⁶ g/L. How many molecules per liter?

At least 25 mg of tetrahydrocannabinol (THC), the active ingredient in marijuana, is required to produce intoxication. The molecular formula of THC is C₂₁H₃₀O₂. How many moles of THC does this 25 mg represent?

At least 25 mg of tetrahydrocannabinol (THC), the active ingredient in marijuana, is required to produce intoxication. The molecular formula of THC is C₂₁H₃₀O₂. How many molecules?

Give the empirical formula of each of the following compounds if a sample contains (b) 2.10 g nickel and 0.58 g oxygen

Give the empirical formula of each of the following compounds if a sample contains (c) 26.56% K, 35.41% Cr, and 38.03% O by mass.

Determine the empirical formula of each of the following compounds if a sample contains (a) 3.92 mol C, 5.99 mol H, and 2.94 mol O

Determine the empirical formulas of the compounds with the following compositions by mass: (a) 74.0% C, 8.7% H, and 17.3% N

Determine the empirical formulas of the compounds with the following compositions by mass: (b) 57.5% Na, 40.0% O, and 2.5% H (c) 41.1% N, 11.8% H, and the remainder S

Determine the empirical formulas of the compounds with the following compositions by mass: (c) 60.0% C, 4.4% H, and the remainder O

A compound whose empirical formula is XF3 consists of 65% F by mass. What is the atomic mass of X?

The compound XCl4 contains 75.0% Cl by mass. What is the element X?