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31 October, 05:52

How many grams of N2 are required to make 75 grams of NH3?

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  1. 31 October, 09:27
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    2.138 I think

    Explanation:

    N2 + 3H2 - > 2NH3

    This means that 3 moles of H2 gives 2 moles of NH3

    Lets convert 12.12 g of NH3 into moles.

    The molecular weight of NH3 is 17 g/mol

    So 12.12 g is 0.713 moles

    If 2 NH3 comes from 3 moles of H2

    1 mole comes from 1.5 moles of H2

    So 0.713 moles of NH3 comes from 1.5 x 0.713 moles of H2 = 1.069 moles of H2

    1 mole of H2 weights 2g

    So 1.069 moles of H2 weighs 2.138 g
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