A gaseous organic compound has an empirical formula $C_xH_y$. When 0.150 g of the compound is completely combusted, it produces 0.225 g of $CO_2$ and 0.090 g of $H_2O$. Given the vapor density of the compound is 29, what is the molecular formula?

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

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

A compound contains 4.07 % Hydrogen, 24.27 % carbon and 71.65 Chlorine, its empirical formula is

A nitrogen oxide contains 30.43% nitrogen by mass. Which of the following could be 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 hydrocarbon contains 85.7% carbon. Its molecular mass is 42. The molecular formula of the compound is:

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

An organic compound contains 78% (by wt.) carbon and the remaining percentage of hydrogen. What is the empirical formula of this compound? (Atomic wt. of C is 12, H is 1)

A hydrated salt of magnesium sulfate, $MgSO_4 \cdot xH_2O$, contains 51.2% water by mass. What is the value of 'x' in the formula?