A sample of ammonium phosphate contains 3.18 moles of hydrogen atoms

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

Problem

A sample of ammonium phosphate

(NH_4)_3PO_4

contains 3.18 moles of hydrogen atoms. The number of moles of oxygen atoms in the sample is (1) 0.265 (2) 0.795 (3) 1.06 (4) 4.00