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    asoluteman3's Avatar
    asoluteman3 Posts: 2, Reputation: 1
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    #1

    Dec 20, 2007, 03:00 PM
    balancing this odd equation
    What is the balanced equation of

    H3PO4+CaH2O = Ca3(PO4)2+H20 ?
    ISneezeFunny's Avatar
    ISneezeFunny Posts: 4,175, Reputation: 821
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    #2

    Dec 20, 2007, 03:16 PM
    assign a variable for each one

    a = H3PO4
    b = CaH2O
    c = Ca3(PO4)2
    d = H20

    write an equation using these values, for each element...

    H: 3a + 2b = 2d
    P: a = 2c
    O: 4a + b = 8c + d
    Ca: b = 3c

    solve.
    asoluteman3's Avatar
    asoluteman3 Posts: 2, Reputation: 1
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    #3

    Dec 20, 2007, 03:36 PM
    2(H3PO4)+ 3(Ca(OH)2)= Ca3(PO4)2 + 6 (H2O)
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