Question

A sample of helium gas inside a closed but flexible container occupies a volume of 355mL at 23°C. If the pressure is held constant, to what temperature must the He be raised to cause the container to expand to a final volume of 1.50 L?

Answer 1

978.19° C

Step-by-step explanation:

P1V1/T1 =P2V2/T2 Since the pressure is constant, this can be written as

V1/T1 = V2/T2 RE-ARRANGE TO

V2 * T1/V1 = T2 Note: T must be in Kelvin!!

1.5 L * (273.15 + 23) / (.355 L ) = T2 = 1251.338 K =978.19 C