# The volume of a gas is 0.400 L when the pressure is 2.00 atm. At the same temperature, what is the pressure at which the volume of the gas is 2.0 L?

May 5, 2017

0.4 atm

#### Explanation:

In this question , the gas is kept under the same temperature. Assuming the amount of gas is constant we can apply Boyles' law.

As per the Boyle' law equation;

${P}_{1}$ ${V}_{1}$ = ${P}_{2}$ ${V}_{2}$

2 atm x 0.400 L = ${P}_{2}$ x 2.0 L

0.800 atm L = 2 ${P}_{2}$ L

dividing both the sides by 2 we get,

0.400 atm = ${P}_{2}$