Question

i) chalk cantain calicum carbon and oxygen in the ratio 10:3:12 find the percentage of carbon in chalk

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Answer 1

Step-by-step explanation:

Chalk contains Calcium, Carbon, and Oxygen in the ratio 10:3:12.

The percentage of carbon in the chalk:

Parts of carbon = 3

Sum of all parts = 10 + 3 + 12

                          = 25

Percentage of carbon = $\frac{parts of carbon}{sum of all parts}$ x 100%

                                    = 3 / 25 x 100%

                                    = 12 %

Therefore the percentage of carbon in chalk is 12%

Answer 2

Answer:

AD

Step-by-step explanation:

ASD