Question

A balloon of helium was put in the freezer at -23°C. Its volume at this temperature was 2.5 liters. It was removed from the freezer. Eventually, it reached a temperature of 177°C. What would its volume be at this temperature? (Neglect any force used to stretch the rubber balloon.)

Answer 1

4.5 L

Step-by-step explanation:

From Charles law;

V1/T1 = V2/T2

Where;

V1= initial volume = 2.5 L

T1 = initial temperature = -23°C + 273 = 250 K

V2 = final volume = unknown

T2 = 177°C +273 = 450 K

Making V2 the subject of the formula

V2 = V1 T2/T1

V2 = 2.5 × 450/250

V2 = 4.5 L