Question

chalk contains calcium carbon and oxygen in the ratio 10:3:12 find the percentage carbon in chalk with explanation ​

Answer 1

Answer:

LET MASSES OF CALCIUM, CARBON AND OXYGEN BE 10X, 3X, AND 12X RESPECTIVELY.

TOTAL MASS = 10X + 3X + 12X = 25X

SO, PERCENTAGE =

$\frac{mass \: of \: carbon}{total \: mass} \times 100 = \frac{3x}{25x} \times 100 = 12\%$

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