Chemistry help......?

Question

A chemist finds that 30.82 g of nitrogen will react with 17.60 g, 35.20g, 70.40, or 88.00 g of oxygen t form four different compounds.

(A) Calculate the mass of oxygen per gram of nitrogen in each compound.

(B) How do the numbers in part (a) support Dalton's atomic theory?

Answer 1

17.60 g / 30.82 = 0.57

35.20g / 30.82 = 1.14 (twice as much oxygen as the first)

70.40 / 30.82 = 2.28   (4 X's as much oxygen as the first)

88.00 / 30.82 = 2.85    (5 X's as much oxygen as the first)

"the law of multiple proportions to the idea that chemical combination consists in the interaction of atoms of definite and characteristic weight"