# Question #c8eb4

##### 1 Answer

Mar 12, 2017

The formula is

#### Explanation:

To do empirical formula problems, follow these steps:

- Convert the masses given into moles, by dividing each mass by the molar mass of that substance:

moles K =

moles O =

- Next find a simple whole-number ratio between these mole amounts. It usually helps to divide both numbers by the smaller.

K:

O:

- Use the ratio find in step 2 to write a formula. In this case, we now know there are 2 moles of K for each 1 mole of O:

Empirical formula =