Question

Three hundred milliliters of `O_2` are collected at a pressure of 645 mmHg. What volume will this gas have a one atmospheric pressure?

Answer 1

`V_2=254.6 mL`

Explanation:

For this question we would use Boyle's equation for the relationship between Pressure and Volume

`P_1V_1=P_2V_2`

`P_1 = 645mmHg`
`V_1=300mL`
`P_2=1atm = 760mmHg`
`V_2=?`

`645mmHg(300mL)=760mmHg(V_2)`

`(645cancel(mmHg)(300mL))/(760cancel(mmHg))=(cancel(760mmHg)(V_2))/(cancel(760mmHg))`

`254.6 mL = V_2`