# Question #de777

##### 1 Answer
Nov 22, 2014

Charles' law states that if pressure remains constant, the temperature and volume of a gas are directly proportional, so that as temperature increases, so does the volume. The equation for this law is:

${\text{V"_1/"T}}_{1}$ = ${\text{V"_2/"T}}_{2}$

Given:
${\text{T}}_{1}$ = $\text{129K}$
${\text{V}}_{2}$ = $\text{185L}$
${\text{T}}_{2}$ = $\text{325K}$

Solution:

Cross multiply.

${\text{V"_1"T}}_{2}$ = ${\text{V"_2"T}}_{1}$

Solve for ${\text{V}}_{1}$.

${\text{V}}_{1}$ = $\text{V"_2"T"_1"/T"_2}$

$\text{V"_1}$ = ($\text{185L}$)($\text{129K}$)$/$$\text{325K}$ = $\text{73.4L}$