Which of the following is the empirical formula for C_2H_6?

What mass (in g) of carbon is in a sample of acetone (CH3COCH3) that contains 6.02 x 10^23 atoms of hydrogen?

A 4.386 g compound of hydrogen, carbon, and oxygen was burned in 9.389 g of oxygen, producing 6.184 g of carbon dioxide and 3.789 g of water. What is the empirical formula of the original sample?

A 48.3 g sample of an aluminum iodine compound contains 3.2 g of aluminum. What is the empirical formula for the compound?

What is the empirical formula for a compound containing 34.4% ethylenediamine, 2.101% Ni, 3.44% sulfate, and 60.06% water by mass?

A compound contains 1.0 g of sulfur (S) and 1.5 g of oxygen (O). What is the empirical formula of the compound?

In the chemical formula P2O5, how many atoms of each element are present?

What is the empirical formula of a compound that contains only iron and oxygen and is 22.27% oxygen by mass?

A compound consists of molecules containing 2 nitrogen atoms and 4 oxygen atoms. What are the molecular and empirical formulas of this compound?