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Calculate the number of molecules in 55.2kg of ethanol??? watch

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    46/55.2= 0.83
    0.83*6.02*10^23= 5


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    Your mass given was in kg.

    for masses calculations, mole = mass / Mr

    You had done the other way round.

    be realistic think about only "5 molecules"?
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    mole = 5525g / Mr of ethanol

    then times mol by avagadros


    (you need to put 55.25 in g and you've done mass/mr the wrong way round)
 
 
 
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