A chemist finds that 30.82g of nitrogen will react with 17.60g, 35.20g, or 88.00g of oxygen to form four different compounds. Calculate the mass of oxygen per gram of nitrogen for each compound.

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"