Question

A compound contains 71.24 g carbon per 100.0 g compound and has a molar mass of 202.32 g/mol. determine the value of the subscript for carbon in the compound. enter answer as an integer.

Answer 1

The answer is 12

Step-by-step explanation:

Carbon has a relative atomic mass of 12. The Carbon content of the compound is 71.24 out of 100 and the molecular mass of the compound is 202.32g/mol. Therefore the amount of Carbon in the entire compound is 71.24/100 * 202.32 =144.132768g.

Since one one carbon is 12g, then, 144.133g will approximately be 12*12. Hence the subscription will be 12.