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

    Jan 2, 2011, 04:33 PM
    What mass of gold contains the same number of atoms as 117.86 g of Cobalt?
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    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #2

    Jan 2, 2011, 05:53 PM

    Fill in the blanks:

    Because the ___________ opf cobalt is ______, we know that 1 mole of cobalt weighs _____ grams, so therefore we know that 117.86 grams is equal to _____ moles of cobalt. A mole is a measure of the number of atoms, so we want to find how heavy ______ moles of gold is. This is simple, because we know that the ___________ of gold is _____, and so we know that _______ moles of gold must weigh _______ grams, this amount of gold has the same number of atoms as 117.86g of Colbalt.

    Wasn't that easy?
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