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9 October, 02:40

What is the mass of 9.38*10^24 molecules of methanol?

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  1. 9 October, 02:42
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    first what's the mass of 1 mole of CH3OH

    C = 12

    H3 = 3x1 = 3

    O = 16

    H = 1

    Total 32g So we know 6.02x10^23 molecules weigh 32g

    1 molecule weighs 32/6.02x10^23 g so 9.38*10^24 molecules weighs

    9.38x10^24 x (32/6.02x10^23 = 505g (to 3 sig figs
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