A gas in a balloon at constant pressure has a volume of 185 mL at - 125*C. What is it's volume at 31.0*C? Show all work including what equation or gas law you use.

1. Charles' law > V1 / T1 = V2 / T2

2. 380mL

Explanation:

Since the pressure is constant, then Charles' law is observed.

The following was given from the question:

V1 = 185 mL

T1 = - 125°C = - 125 + 273 = 148K

V2 = ?

T2 = 31°C = 31 + 273 = 304K

V1 / T1 = V2 / T2

185 / 148 = V2 / 304

Cross multiply to express in linear form

148 x V2 = 185 x 304

Divide both side by 148

V2 = (185 x 304) / 148

V2 = 380mL