# What was the original volume of a gas that has changed from a pressure of 6.20 atm to 9.150 atm and a new volume of 322 mL?

##### 1 Answer

Sep 6, 2017

The original volume was 475 mL.

#### Explanation:

Since only the pressure changes, we can use **Boyle's Law** to solve this problem.

Boyle's Law is

#color(blue)(bar(ul(|color(white)(a/a)p_1V_1 = p_2V_2color(white)(a/a)|)))" "#

We can rearrange Boyle's Law to get

#V_1 = V_2 × p_2/p_1#

In this problem,

∴