# Question #fe104

##### 1 Answer

Nov 1, 2017

Divide the oxygen-16 mass by 1.06632

#### Explanation:

It may be helpful to look at this algebraically.

Let the mass of nitrogen-15

As the mass of nitrogen -15 is 1.06632 times bigger than the mass of oxygen-16:

Now you just rearrange to calculate

So the mass of nitrogen-15 is:

Hope that helps