When a mixture of 10 mole of , 15 mole of was passed over catalyst, 8 mole of was formed

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

Problem

When a mixture of 10 mole of

\text{SO}_2

, 15 mole of

\text{O}_2

was passed over catalyst, 8 mole of

\text{SO}_3

was formed. How many mole of

\text{SO}_2

and

\text{O}_2

did not enter into combination?