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How many moles O2 must react with excess H2 to form 7.89 mol H2O?
Wiki User
∙ 12y ago
Oxygen limits the reaction, so......Balanced equation.
2H2 + O2 -> 2H2O
7.89 mole H2O (1 mole O2/2 mole H2O)
= 3.95 mole oxygen gas needed
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Wiki User
∙ 12y ago
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