Combined Gas law

Question

A 25 milliliter chamber is pressurized to 370. mm Hg. What would the new pressure be if the

chamber was enlarged to 45 milliliters?

Answer 1

Since the temperature stays constant, we can use Boyle's Law:

P1V1 = P2V2

Given:

P1 = 370 mm Hg

V1 = 25 mL

V2 = 45 mL

Solve for P2:

P2 = (P1 x V1) / V2

P2 = (370 x 25) / 45

P2 = 205.6 mm Hg

So the new pressure is approximately 210 mm Hg.

This makes sense because increasing the volume causes the pressure to decrease when temperature is constant.