Question

The volume occupied by a sample of gas is 480 mL when the pressure is 115 kPa.What pressure must be applied to the gas to make its volume become 650 mL? (P2= P1V1/V2)

Answer 1

The answer is

84.9 kPa

Step-by-step explanation:

Using Boyle's law to find the final pressure

That's

`P_1V_1 = P_2V_2`

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we are finding the final pressure

`P_2 = (P_1V_1)/(V_2)`

From the question

P1 = 115 kPa

V1 = 480 mL

V2 = 650 ml

So we have

`P_2 = (115000 * 480)/(650) = (55200000)/(650) \\ = 84923.076923...`

We have the final answer as

84.9 kPa

Hope this helps you