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Rebekah
Lv 4
How many moles of hydrogen gas are produced, given the mass of Mg and the balanced chemical equation?
The mass of magnesium is 0.0479 g
The balanced chemical equation is:
2Mg (s) + 2HCl -> H2 (g) + 2MgCl (aq)
1 Answer
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- Roger the MoleLv 74 years agoFavorite Answer
Supposing excess HCl:
(0.0479 g Mg) / (24.30506 g Mg/mol) x (1 mol H2 / 2 mol Mg) = 0.000985 mol H2
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