P and Q are two elements which forms and

CHEMISTRY · Subjective · A Level · Chemistry · Amount of substance · Amount of substance

Problem

P and Q are two elements which forms P2Q3\text{P}_2\text{Q}_3 and PQ2\text{PQ}_2 . If 0.15 mole of P2Q3\text{P}_2\text{Q}_3 weighs 15.9 g and 0.15 mole of PQ2\text{PQ}_2 weighs 9.3 g, what are atomic masses of P and Q?

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