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If 20.0 grams of magnesium are added to a solution containing 1.00 mole of hydrochloric acid,...

If 20.0 grams of magnesium are added to a solution containing 1.00 mole of hydrochloric acid, how many grams of hydrogen gas are produced? Mg(S) + 2HCl(aq) --> H2(g) + MgCl2(aq)

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