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19 August, 20:22

Given the balanced equation: 2 h2 (g) + o2 (g) → 2 h2o (l) how many grams of h2o are formed if 9.00 mol h2 (g) reacts completely with an excess of o2 (g) ? the molar mass of h2o is 18.0 g/mol.

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  1. 19 August, 20:27
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    162 g of H₂O

    Solution:

    The Balance Chemical Equation is as follow,

    2 H₂ + O₂ → 2 H₂O

    According to equation when,

    2 mol of H₂ is reacted = 36 g (2 mol) H₂O is produced

    So,

    9 mol H₂ on reaction will produce = X g of H₂O

    Solving for X,

    X = (9 mol * 36 g) : 2 mol

    X = 162 g of H₂O
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