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If you have 3.011x10^23 atoms of carbon, what would you expect its mass to be?

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can someone please explain how to work this problem? i am totally confused about this homework!

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  1. Use avogardos number http://en.wikipedia.org/wiki/Avogadro's_...

    # moles = # molecules/ avogardos number

    # moles= 3.011x10^23/6.02214x10^23 = approx 0.5

    approximately 0.5 moles

    the mass =( # moles)*(molar mass)

    molar mass carbon = 12.0107 g/mol http://en.wikipedia.org/wiki/Carbon

    mass=0.5*12.0107=6 grams carbon

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