Question

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?

Answer 1

45kPa

Step-by-step 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