A sample of He in a metal container at 534.19 kPa has its temperature changed from 226.08 K to 192.6 K. What is the final pressure in kilopascals?

Answer 1

Hello, Brandy

P2 = P1(V1/V2)(T2/T1)

No volume is given, so we'll assume it remains constant and since the final answer depends on the ratio (V1/V2), ir will cancel. I used a random volume of 1 L just so that it looks better on my table. The final pressure is thus dependent only on (T2/T1), which decreases by around 10%. So I'd predict a final pressure around 10% less than the original.

Bob