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12 October, 08:54

What is the mass of 3.50*10^26 atoms of copper

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  1. 12 October, 10:22
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    The atomic mass of Cu is 63.546 atomic mass units (A. M. U)

    So,

    mass of 3.5*10^26 atoms of Cu

    =63.546*3.5*10^26

    = 222.411*10^26 A. M. U

    =222.411*10^26*1.66*10^ (-24) gram

    = 369.20226*10^2 gram Ans!
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