1. Quantitative analysis of a 5.00-g sample of a gaseous compound yielded the following results: 2.00 g sulfur and 3.00 g oxygen. What is the empirical formula of the compound?
2. What is the molecular formula for butane if it has an empirical formula of C2H5 and each molecule has 10 hydrogen atoms?
3. The percent composition of acetic acid is 39.99% C and 6.73% H. The remainder of the compound is oxygen. The molar mass of acetic acid is 60.06 g/mol. Calculate the molecular formula of acetic acid.
4. What is the empirical formula of a compound that is 29.08% Na, 40.56% S, and 30.36% O?
5. a) Calculate the percent composition of a compound that has 0.90 g of calcium and 1.60 g of chlorine.
b) Determine the empirical formula for this compound.
6. Determine the empirical formula of a compound that is 52.92% aluminum and 47.08% oxygen.