A rubber balloon was filled with helium at 25˚C and placed in a beaker of

Question

liquid nitrogen at -196˚C. The volume of the cold helium was 15 cm3 Assuming ideal gas behavior and isobaric conditions, what was the volume
of the helium at 25˚C?

Answer 1

Isobaric means constant pressure.
V1/T1) = (V2/T2)
Remember T must be in kelvi.