Question

The volume of a gas with an initial pressure of 380 mmHg atm increases from 5.0 L to 8.0 L. What is the final pressure of the gas, in atm, assuming no change in moles or temperature?
A) 238 atm
B) 2.4 atm
C) 0.31 atm
D) 0.80 atm
E) 8.0 atm

Answer 1

Answer:

0.31 atm

Explanation:

The new pressure can be found by using the formula for Boyle's law which is

$P_1V_1 = P_2V_2$

Since we are finding the new pressure

$P_2 = \frac{P_1V_1}{V_2}$

From the question

760 mmHg = 1 atm

380 mmHg = 0.5 atm

We have

$P_2 = \frac{0.5 \times 5}{8} \\ = 0.3125$

We have the final answer as

0.31 atm

Hope this helps you