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5 July, 00:40

How many molecules are in 12 grams of methane (CH 4) ?

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Answers (2)
  1. 5 July, 00:52
    0
    To calculate number of molecules, we first need to calculate the number of moles of methane.

    Number of moles of methane = / frac{Given mass}{Molar mass of methane}

    Molar mass of methane = 16.04 g/mol

    Given mass of methane = 12 g

    Number of moles of methane=/frac{Given mass}{Molar mass of methane}

    =/frac{12}{16.04}

    = 0.74 mol

    Number of molecules of methane = 0.74/times 6.023 / times 10^{23}

    = 4.5 * e²³
  2. 5 July, 01:39
    0
    12 grams of methane is one mole. So there are N (Avogadro) = 6.22 x 10^23 molecules in one mole of methane
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