Which answer choice shows the correct chemical formula for barium sulfate?

What is the percent of carbon by mass in acetone CH3C(O)CH3?

What is the percent composition of potassium in K2Cr2O7?

Which of the following does not have the empirical formula CH?

Which of the following compounds has a percent composition of carbon, (approximately 63%)?

An unknown compound is found to contain 37.47% carbon, 12.61% hydrogen, and 49.92% oxygen by mass. What is the empirical formula for this compound?

A mystery carbohydrate is composed of 25% carbon, 8.3% hydrogen, and 66.7% oxygen. What is the molecular formula of this mystery carbohydrate, assuming the molar mass of the compound is three times as heavy as the molar mass of the empirical formula?

What is the empirical formula for a sample that is 75% carbon by weight and 25% hydrogen by weight? (Note that this compound may not be realistic)

A compound is composed of 13% carbon, 4.3% hydrogen, 30.4% nitrogen, and 52.2% oxygen. The mystery compound has a molar mass of 184 grams per mole. What is the molecular formula of the compound?

What is the empirical formula for a compound that is composed of 22.6% carbon, 1.9% hydrogen, and 75.5% oxygen?