Define an excess of hydrochloric acid

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Reference no: EM13648101

Emma is analyzing a sample which contains some zinc in it. The sample is .198 g. She reacts it with an excess of hydrochloric acid and measures hydrogen gas produced. The determination shows the sample to be 84% zinc. What amount of hydrogen (measured at STP) was obtained. Write equation first.

Reference no: EM13648101

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