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    De1959's Avatar
    De1959 Posts: 1, Reputation: 1
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    #1

    Nov 15, 2007, 09:06 PM
    Finding the number of moles
    Calculate how many moles of the second reactant would be required to react completely with 5.00 mol of the first reactant.
    C2H6(g) + O2(g)--->CO2(g) + H2) (g)
    I have about a dozen of these for homework. Been working on them for hours
    Can anyone help?
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Nov 17, 2007, 02:19 AM
    It is very easy. I'll just give you an example and you will try by yourself.

    C (s) + O2 (g) -> CO2 (g)

    There are no numbers in front of the reactants. Therefore one mole of C is reacting with one mole of O2.

    In another situation;

    3Fe (s) + O2 (g) -> Fe3O2 (s)

    Whereby three moles of Fe react with one mole of O2. Understand?
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