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OpenStudy (anonymous):

How many moles of hydrogen gas would be needed to react with excess carbon dioxide to produce 99.1moles of water vapor?

OpenStudy (anonymous):

O2 + H2 <-> CO + H2O all one to one ( I assume that 99.1 is grams. Always units!!!! ) 99.1 grams H2O (1 mole H2O/18.016 grams)(1 mole H2/1 mole H2O) = 5.50 moles of hydrogen gas needed

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