4. A mixture of chromium and zin weighing 0.363 grams was reacted with excess HCl. After all the metal had reacted, 158 ml of dry hydrogen gas was collected at 27°C and 750 torr. Assuming that both metals react with the HCl as single displacement reactions, determine the mass of zinc in the sample

Chemistry for Engineering Students
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Chapter5: Gases
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4. A mixture of chromium and zin weighing 0.363 grams was reacted with excess HCl. After all the metal had reacted, 158 ml of dry hydrogen gas was collected at 27°C and 750 torr. Assuming that both metals react with the HCl as single displacement reactions, determine the mass of zinc in the sample
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