What amount of hydrogen measured at stp

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Reference no: EM13696968

Problem- The purity of a sample containing zinc and weighing 0.348 g is determined by measuring the amount of hydrogen formed when the sample reacts with an excess of hydrochloric acid. The determination shows the sample to be 84.0% zinc. What amount of hydrogen (measured at STP) was obtained?

2.92 × 10-1 L

1.45 × 10-1 g

5.32 × 10-3 mole

2.69 × 1021 molecules

2.69 × 1021 atoms

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Reference no: EM13696968

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