Question

What is the percent by mass of carbon in `CO_2` equal to?

Answer 1

`%C~=27%`

Explanation:

`%C="Molar mass of carbon"/"Molar mass of carbon dioxide"xx100%`

`=(12.011*g*mol^-1)/((12.011+2xx15.999)*g*mol^-1)xx100%=??`