A sample of gas has a pressure of 245 kPa and a volume of 500 mL. Assuming constant temperature, what will the volume be when the pressure is 325 kPa?

1 Answer
May 10, 2018

V_2 = ~376.9 mL

Explanation:

Boyle's Law

P_1V_1 = P_2V_2 , where P is the pressure and V is the volume. Note that this is an inversely proportional relationship. If the pressure increases, the volume decreases. If the pressure decreases, the volume increases.

Let's plug-in our data. Remove the units for now.

(245 * 500) = (325 * V_2)

First, multiply 245 by 500. Then, divide by 325 to isolate for V_2.

245 * 500 = 122,500

122500/325 = 376.9230769 mL

Source and for more info:
https://en.wikipedia.org/wiki/Boyle%27s_law