Question

An organic compund has a molar mass of 178.3g/mol and contains 7.29% hydrogen atoms by mass. How many hydrogen atoms are in each molecule of this compound

Answer 1

1 mol of the compound weighs 178.3 g. It will have 6.02E23 molecules of the organic compound. Then number of H atoms will be 6.02E23 x 0.0729 = ?