# Question #87395

Apr 20, 2017

$3.89 a t m$

#### Explanation:

Use the formula:
${P}_{1} {V}_{1} = {P}_{2} {V}_{2}$

$8.12 a t m \cdot 2.19 L = {P}_{2} \cdot 4.57 L$

${P}_{2} = \frac{8.12 a t m \cdot 2.19 L}{4.57 L}$

${P}_{2} = 3.8912035 a t m$

Since you only have 3 significant figures, the answer is:

${P}_{2} = 3.89 a t m$