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?
The original volume was 475 mL.
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,