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    clau2002's Avatar
    clau2002 Posts: 4, Reputation: 1
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    #1

    Jul 14, 2009, 08:45 AM
    Calculate molar mass
    How do I calculate the molar mass on the following?
    a) Ca(PO₄)₂
    b) C₄SO₄ x 5H₂O
    c) (NH₄)₂SO₄ x 12H₂O
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Jul 14, 2009, 08:55 AM

    Just add the atomic masses of each atom present in them.

    I'll do the first one.

    Ca(PO₄)₂ : Molar mass = 40 + 2(31+16+16+16+16) = 198 g

    You have the required masses in the periodic table.

    If you have water, add them too.

    Try the rest and post your answers.
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