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    Barclay007's Avatar
    Barclay007 Posts: 1, Reputation: 1
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    #1

    May 12, 2014, 03:38 PM
    The standard molar heat of vaporization for water is 40.79 kJ/mol.
    The standard molar heat of vaporization for water is 40.79 kJ/mol. How much energy would be required to vaporize 6.61 ×1010 molecules of water? Answer in units of kJ
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #2

    May 13, 2014, 01:00 PM
    Well Barclay, we just don't do homework for you. Look at the question. Looks like a basic math question with 1010 Moles? Instead of molecules?
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #3

    May 14, 2014, 05:48 AM
    I think the OP means 6.1 x 10^10 molecules of water, although that's an extremely small amount of water. Barclay - simply convert that number of molecules to moles (divide by Avogadro's number) and you're 90% done.
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