Which substance contains the highest number of moles of hydrogen atoms?

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

Problem

Which substance contains the highest number of moles of hydrogen atoms? (1) 0.05 mol of

\text{CH}_4

(2) 0.04 mol of

(\text{NH}_4)_2\text{SO}_4

(3) 0.03 mol of

\text{H}_2\text{O}_2

(4) 0.1 mol of

\text{H}_2