A hydrocarbon contains 82.76% carbon by mass. If 0.90 g of the hydrocarbon occupies a volume of 390 $cm^3$ at STP, what is its molecular formula?

The formula of a compound which gives simple whole number atomic ratio in one molecule of a compound is called:

The empirical formula of naphthalene is:

A compound containing only carbon and hydrogen has an empirical formula of CH2. If its molar mass is approximately 56 g/mol, what is its molecular formula?

The empirical formula of an organic compound is ${\bf{C}}{{\bf{H}}_{\bf{2}}}{\bf{O}}$ , its vapour density is 45, The molecular formula of the compound is

A hydrocarbon contains 82.76% carbon by mass. If 0.90 g of the hydrocarbon occupies a volume of 390 $cm^3$ at STP, what is its molecular formula?

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

The empirical formula of glucose is CH$_2$O. If its molecular weight is 180, what is the molecular formula of glucose?

Which of the following pairs has the same empirical formula?

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