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How many grams of hydrogen gas (H2) is produced if 10.0 mol of Zn are added to hydrochloric acid (HCl) according to the equation: Zn+2HCl→ZnCl2+H2 ?

a.) 20.2 g H2
b.) 10 moles H2
c.) 10.1 g H2
d.) 2.02 g H2

Sagot :

,1 mol Zn produces 1 mol H2.10.0 moles Zn produces 10.0 moles H2 gas.Mass H2 gas = 10.0 mol * 2.02g/mol = 20.2 g.
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