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 remaining percentage of hydrogen. The right option for the empirical formula of this compound is: [Atomic wt. of C is 12, H is 1]

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

Consider the following reaction: $xMnO_4^ - + y{C_2}O_4^{2 - } + z{H^ + } o xM{n^{2 + }} + 2yC{O_2} + \frac{z}{2}{H_2}O$

The values of x, y and z in the reaction are, respectively

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?

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

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

A compound has the molecular formula C$_2$H$_4$O$_2$. What is its empirical formula?

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

Which of the following pairs has the same empirical formula?

A nitrogen oxide contains 30.43% nitrogen by mass. Which of the following could be its molecular formula?