Calculate the percent by mass of carbon in co2 (carbon dioxide).

The answer to your question is 27.3 %

Explanation:

Percent by mass = ?

Process

1.- Calculate the atomic mass of carbon using the periodic table

Atomic mass = 12g

2.- Calculate the molecular mass of CO₂.

Carbon = 12

Oxygen = 16 x 2 = 32

Total = 12 + 32 = 44g

3.- Calculate the percent by mass of carbon using proportions

                          44g 100%

                           12 g  x

                            x = (12 x 100) / 44

                            x = 1200 / 44

                            x = 27.3 %

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