A 12.50 g sample of a hydrocarbon contains 75.0 % carbon by mass

CHEMISTRY · Single correct · A Level · Chemistry · Amount of substance · Amount of substance

Problem

A 12.50 g sample of a hydrocarbon contains 75.0 % carbon by mass. What is the mass of hydrogen present in this sample? (a)

4.69\ \text{g}

(b)

1.57\ \text{g}

(c)

3.13\ \text{g}

(d)

6.25\ \text{g}