Question

A sample of gas occupies a volume of 303.4 mL and has a pressure of 623.3 torr. What will the pressure of the sample of gas be if the volume is increased to 835 mL? Be sure to include units with your answer.

Answer 1

In order to find the answer for this question we can use Boyle's law, which tells us that the same amount of volume times pressure in one situation must be equal to the amount of volume times pressure in a second situation, the formula is:

P1 * V1 = P2 * V2, in our question we already have P1, V1 and V2

I will use atm instead of torr to make the calculations easier, and when we get the final value I will use torr

0.82atm * 303.4mL = P2 * 835mL

248.78 = 835P2

P2 = 0.29atm or 220.4 torr

The pressure, when we have 835mL, will be 0.29 atm or 220.4 torr