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?

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?

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 a.0.0130 mol C, 0.0390 mol H, and 0.0065 mol O

Give the empirical formula of each of the following compounds if a sample contains b.11.66 g iron and 5.01 g oxygen

Give the empirical formula of each of the following compounds if a sample contains c.40.0% C, 6.7% H, and 53.3% O by mass.

Determine the empirical formula of each of the following compounds if a sample contains a. 0.104 mol K, 0.052 mol C, and 0.156 mol O;

Determine the empirical formula of each of the following compounds if a sample contains b. 5.28 g Sn and 3.37 g F;

Determine the empirical formula of each of the following compounds if a sample contains c. 87.5% N and 12.5% H by mass.

Determine the empirical formulas of the compounds with the following compositions by mass: a. 10.4% C, 27.8% S, and 61.7% Cl

Determine the empirical formulas of the compounds with the following compositions by mass: b. 21.7% C, 9.6% O, and 68.7% F

Determine the empirical formulas of the compounds with the following compositions by mass: a. 55.3% K, 14.6% P, and 30.1% O

Determine the empirical formulas of the compounds with the following compositions by mass: c. 62.1% C, 5.21% H, 12.1% N, 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?

What is the molecular formula of each of the following compounds? (a) empirical formula CH, molar mass 5 78.0 g/mol (b) empirical formula NH₂Cl, molar mass = 51.5 g/mol

What is the molecular formula of each of the following compounds? (a) empirical formula HCO₂, molar mass = 90.0 g/mol

What is the molecular formula of each of the following compounds? (b) empirical formula C₂H₄O, molar mass = 88.0 g/mol

Determine the empirical and molecular formulas of each of the following substances: (a) Styrene, a compound used to make Styrofoam® cups and insulation, contains 92.3% C and 7.7% H by mass and has a molar mass of 104 g/mol.

Determine the empirical and molecular formulas of each of the following substances: (b) Caffeine, a stimulant found in coffee, contains 49.5% C, 5.15% H, 28.9% N, and 16.5% O by mass and has a molar mass of 195 g/mol.

Determine the empirical and molecular formulas of each of the following substances: (c) Monosodium glutamate (MSG), a flavor enhancer in certain foods, contains 35.51% C, 4.77% H, 37.85% O, 8.29% N, and 13.60% Na, and has a molar mass of 169 g/mol.

Determine the empirical and molecular formulas of each of the following substances: (a) Ibuprofen, a headache remedy, contains 75.69% C, 8.80% H, and 15.51% O by mass and has a molar mass of 206 g/mol.

Determine the empirical and molecular formulas of each of the following substances: (b) Cadaverine, a foul-smelling substance produced by the action of bacteria on meat, contains 58.55% C, 13.81% H, and 27.40% N by mass; its molar mass is 102.2 g/mol.

Determine the empirical and molecular formulas of each of the following substances: (c) Epinephrine (adrenaline), a hormone secreted into the bloodstream in times of danger or stress, contains 59.0% C, 7.1% H, 26.2% O, and 7.7% N by mass; its molar mass is about 180 u.

(a) Combustion analysis of toluene, a common organic solvent, gives 5.86 mg of CO₂ and 1.37 mg of H₂O. If the compound contains only carbon and hydrogen, what is its empirical formula?

(b) Menthol, the substance we can smell in mentholated cough drops, is composed of C, H, and O. A 0.1005-g sample of menthol is combusted, producing 0.2829 g of CO₂ and 0.1159 g of H₂O. What is the empirical formula for menthol? If menthol has a molar mass of 156 g/mol, what is its molecular formula?

(a) The characteristic odor of pineapple is due to ethyl butyrate, a compound containing carbon, hydrogen, and oxygen. Combustion of 2.78 mg of ethyl butyrate produces 6.32 mg of CO₂ and 2.58 mg of H₂O. What is the empirical formula of the compound?

(b) Nicotine, a component of tobacco, is composed of C, H, and N. A 5.250-mg sample of nicotine was combusted, producing 14.242 mg of CO₂ and 4.083 mg of H₂O. What is the empirical formula for nicotine? If nicotine has a molar mass of 160 ± 5 g/mol, what is its molecular formula?