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  • 21-04-2022
  • Chemistry
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What is the mass percentage of C in C2H2O2?
Provide an answer to two decimal places.

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  • 21-04-2022

Molar mass:

[tex]12 \times 2 + 2 \times 2 + 16 \times 2[/tex]

[tex] = 24 + 2 + 32 [/tex]

[tex] = 58 \: gram \: per \: mole[/tex]

Carbon Contribution by mass:

[tex]58 = 100\% \\ 24 = x\%[/tex]

[tex]x = \frac{24 \times 100}{58} = 41.38\%[/tex]

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