An organic compound is found to contain 40% carbon, 6.67% hydrogen, and 53.33% oxygen by weight. What is the empirical formula of this compound? (Atomic weights: C=12, H=1, O=16)

An organic compound contains 49.3% carbon, 6.84% hydrogen and its vapour density is 73. Molecular formula of compound is

A compound Y contains 16% of element P (atomic mass = 32 u), 4% of element Q (atomic mass = 16 u), and the rest is element R (atomic mass = 12 u). What is the empirical formula of compound Y?

A substance contains 24% carbon and 76% fluorine by weight. What is the empirical formula of this substance? (Atomic weights: C=12, F=19)

A mineral sample contains 27.27% of element X (atomic mass = 56 u) and 72.73% of element Y (atomic mass = 16 u). What is the empirical formula of the mineral?

Which of the following represents an empirical formula?

A Carbon compound contains 12.8 % Carbon, 2.1 % Hydrogen and 85.1 % of Bromine. The molecular weight of the compound is 187.9. Its molecular formula is (at. Wt. of Br = 80)

A compound has an empirical formula of CH and a molecular mass of 78 g/mol. What is its molecular formula?

What is the empirical formula of a compound having 40% carbon, 6.66% hydrogen and 53.34% oxygen?

A compound has the empirical formula C2H4O. If its molecular mass is 88 g/mol, what is its molecular formula?

Which of the following pairs has the same empirical formula?