Question

A balloon is filled with 2.50 L of dry helium at 23.5 °C. The ballon is placed in a freezer overnight. The next morning, the balloon is removed and the volume is found to be 2.15 L . What was the temperature (in °C ) inside the freezer if the pressure remained constant?​

Answer 1

23.5 °C

Explanation:

V₁ = 2.50 L, V₂ = 2.15 L, T₁= 296.5 K

Combined gas formula,

V₁/T₁ = V₂/T₂

T₂ = V₂T₁/V₁

     = 2.15 × 296.5/2.15

      = 296.5 K

T₂ = 23.5 °C