Nitrogen form five compound with oxygen in which 1.0 g of nitrogen combines with 0.572,1.14,1.73,2.28 and 2.85g of oxygen respectively .show dis figure agree with law of multiple proportion.

Answer 1

Take the first one.
mols N = 1/14 = 0.0714
mols O 1/16 = 0.0357

You can see N is twice that of O sot he formula is N2O. Go through the others in the same fashion to see NO, N2O3 ETC.

Answer 2

1:2:3:4:5