Chemistry

How many moles of water vapor react to yield 546.234 moles of hydrogen?

asked by Marissa
  1. React with what to form what? I assume that is to decompose to H2 and O2 but I don't know that.
    Write the equation.
    2H2O ==> 2H2 + O2
    546.234 mols H2 x (2 mol H2O/2 mol H2) = 546.234 x (2/2) = 546.234 x 1/1 = 546.234 mol H2O.
    It's done with the coefficients.
    2H2O

    posted by DrBob222

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