Question

A laboratory bottle of helium gas occupies a volume of 2.0 L at 760 mm Hg. Calculate the new pressure if the

volume falls to 1.8 L.

Answer 1

844.4 mmHg

Step-by-step 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 = (P_1V_1)/(V_2) \\`

From the question we have

`P_2 = (2 * 760)/(1.8) = (1520)/(1.8) \\ = 844.4444...`

We have the final answer as

844.4 mmHg

Hope this helps you