A gas has a pressure of 75 KPa and a volume of 33 Liters. What's the new

pressure if the volume is changed to 55 Liters?

45kPa

Explanation:

P1 = 75kPa = 75,000Pa

V1 = 33L

V2 = 55L

P2 = ?

To solve this question, we'll have to apply Boyle's law which states that the volume of a fixed mass of gas is inversely proportional to its pressure provided its temperature remains constant

Mathematically,

V = k / P, k = PV

P1*V1 = P2*V2 = P3*V3 = ... = Pn*Vn

P1 * V1 = P2 * V2

P2 = (P1 * V1) / V2

P2 = (75000 * 33) / 55

P2 = 45000Pa

P2 = 45kPa

The final pressure of the gas is 45kPa