Carbon and oxygen are known to form two compounds. The carbon content in one of these is `42.9%` while in the other it is `27.3%`. Show that this data is in agreement with the law of multiple proportions.

Explanation

In a compound of `C` and `O`
`C= 42.9, O= 57.1`
`:.` Rate of `C:O :: (42.9)/(57.1)= 0.751`
In other compound of `C` and `O`
`C= 27.3 , O= 72.7`
`:.` Ratio of `C:O::(27.3)/(72.7)= 0.376`
Thus, the ratio of amounts of `C` reacting with same mass of `O= 0.751: 0.376= 2:1`
This is in agreement with law of multiple proportions.