Question

3. If a certain quantity of gas has a volume of 30 cm3 at a pressure of 1 × 105 Pa, what is its volume when the pressure is

a. 2 × 105 Pa,
b. 5 × 105 Pa?
Assume the temperature remains constant.
Plz help me ASAP!!!

Answer 1

We know that:

`P_(1)V_(1)= P_(2)V_(2)` .......(1)

Given at
`P_(1)=30cm^3` ,
`V_(1)=10^5Pa`

a)

When
`P_(2)=2*10^5Pa` ,
`V_2=`?

Using equation (1)

`30*10^5=2*10^5*V_2`

`V_2=30/2=15cm^3`

b)

When
`P_2=5*10^5Pa`,
`V_2=?`

using equation (1)

`30*10^5=5*10^5*V_2`

`V_2=30/5=6cm^3`