Question

If the ratio of nitrogen to oxygen present in a compound by mass is 7:8 then the ratio of numbers of atoms of nitrogen to oxygen is ....

Answer 1

The ratio is 7:8 for N:O by mass.
So 7/14 : 8/16 should be the ratio when divided by molar mass which gives 1/2 : 1/2 i.e. 1:1
So the ratio of atoms of N and O is 1:1.

Answer 2

The ratio is determined as 7:8 for N:8 for mass calculation.

The 7/14 and denotes by taking 8/16 as the right ratio calculated when divided by molar mass which gives 1/2.

This can be initiated by delivering ½ and ratio is certainly 1:1.

So, the ratio of atoms of N and O is 1:1.