Nitrous oxide, N 2 O , has a mass ratio of nitrogen to oxygen of 1.00 : 0.57 . Determine the ratio by mass of nitrogen to oxygen in dinitrogen trioxide, N 2 O 3 , and dinitrogen pentoxide, N 2 O 5 . N 2 O 3 has a mass ratio of nitrogen to oxygen of 1.00 : N 2 O 5 has a mass ratio of nitrogen to oxygen of 1.00 :

Explanation:

1.

Mass ratio: 1.00 : 0.57 (given)

Represent the atomic mass of N by x and the atomic mass of O by y, then:

2.

Using x and y for the corresponding atomic masses, the mass ratio of is:

Use x/y = 1/1.14

Divide both numerator and denominator by 2:

3.

Using x and y for the corresponding atomic masses, the mass ratio of is:

Use x/y = 1/1.14

Divide both numerator and denominator by 2:

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)