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10th grade

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What would be the percentage composition of carbon in 10g sample of methane is?

  • Science, not "10th grade" -

    Please type your subject in the School Subject box. Any other words, including obscure abbreviations, are likely to delay responses from a teacher who knows that subject well.

  • 10th grade -

    I am sure this one has been answered recently.

    calculate the molecular mass for methane (CH4) = 16

    the percentage of C in 10 g of methane wil be the same as the percentage of C in the molecular mass so

    12x100%/16

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