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?

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?

A hydrocarbon contains 82% carbon by weight. If the atomic weight of carbon is 12 and hydrogen is 1, what is its empirical 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)

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?

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

If the empirical formula of a compound is CH and its molecular weight is 78, what is its molecular formula?

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

The simplest formula of a compound containing of element X and of element Y is

A compound X contains 32% of A, 20% of B, and the remaining percentage of C. The empirical formula of X is: (Given atomic masses of A = 64 u; B = 40 u; C = 32 u)