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Dec 10th, 2015
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In the lab, hydrogen gas is usually made by the following reaction. Zn(s)+2HCl(aq) arrow H2(g) +ZnCl2(aq). How many liters of H2 gas collected over water at an atmosphere pressure of 752 mmHg and a temperature of 21.0 degree C can be made from 1.566g of Zn and excess HCl? The partical pressure of water vapor is 18.65 mm Hg at 21.0 degree C?

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