FlowerChild8146 FlowerChild8146
  • 21-09-2019
  • Chemistry
contestada

The mass % of C in methane CH4 is a) 74.87 b) 7.743 c) 133.6 d) 25.13 €) 92.26 159

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cristisp93
cristisp93 cristisp93
  • 22-09-2019

Answer:

a) 74.87 % carbon

Explanation:

Molecular mass of CH₄ is 16.042 g / mole.

Now we divide the following reasoning for 1 mole of methane:

if in        16.042 g of CH₄ there are 12.01 g of carbon

then in  100 g of CH₄ there are X g of carbon

X = (100 × 12.01) / 16.042= 74.87 % carbon

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