Question

A student reduces the temperature of a 300 cm3 balloon from 60°C to 30°C. What will the new volume of the balloon be? (Remember to be careful with the units.)

Answer 1

Assuming constant pressure, V/T = constant.

Where T is absolute temperature, and V is volume.

T1 = 60 ° + 273.15 = 333.15 K
V1 = 300 cm^3

T2 = 30°C + 273.15 = 303.15 K
V2 = ?

V1 / T1 = V2 / T2 = >  V2 = [V1/T1] * T2

V2 = [300cm^3 / 333.15K] * 303.15K = 272.9 cm^3

Answer: 272.99 cm^3