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10 August, 23:26

How many molecules are there in 122 grams of Cu (NO3) 2?

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  1. 10 August, 23:40
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    cu=1*63g=63g

    n=2*14g=28g

    o=6*16g=96g

    total=187g/mol

    122 (1 mol/187) (6.02*10^23) = 3.92*10^23
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