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01-12-2020
Chemistry

contestada

Calculate the mass percent composition of carbon
in
C3H4

Respuesta :

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01-12-2020

Answer: 90%

Explanation:

So we need to find the molar mass of the entire compound, and the mass of carbon times the number of molecules:

Molar mass: 3*12 + 4*1 = 40

Mass of carbon: 12*3 = 36

36/40 * 100 = 9/10 * 100 = 90%

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