Mg + 2HCl → MgCl2 + H2 How many grams of Mg is needed to produce 100 g of H2?

Question

Mg + 2HCl → MgCl2 + H2
How many grams of Mg is needed to produce 100 g of H2?

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Delwyn 5 years 2021-07-30T03:19:45+00:00 1 Answers 22 views 0

Answers ( )

  1. Nem
    0
    2021-07-30T03:21:23+00:00
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    H2

    n=m÷Mr

    n=100×2

    n=200 moles

    Mole ratio

    Mg : H2

    1 : 1

    x : 200

    cross multiply= x=200

    Mg

    make m the subject

    m=n×Mr

    m=200×24.305

    m=4861 g

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