Question

A compound contains 25.93% N and the rest is oxygen. What is the empirical formula for the compound?

Answer 1

Answer: NO2

Explanation:

                                  N                                O

Divide each by its    25.93                       74.07

mass number              14                             16

                                     2                              4

Divide both by the       2                               2

smaller (i.e. 2)               1                                2

Therefore, the empirical formula = NO2