Question

PLEASE HELP DUE TODAY 55 POINTS

The volume of a gas is 27.5 mL at 22.0°C and 0.974 atm. What will the volume be at 15.0°C
and 0.993 atm?
(5 Points)
22.1 mL
26.3 mL
2.2 mL

Answer 1

volume of gas will be, 26.3 mL

Step-by-step explanation:

Answer 2

Answer : The final volume of gas will be, 26.3 mL

Explanation :

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

`(P_1V_1)/(T_1)=(P_2V_2)/(T_2)`

where,

`P_1` = initial pressure of gas = 0.974 atm

`P_2` = final pressure of gas = 0.993 atm

`V_1` = initial volume of gas = 27.5 mL

`V_2` = final volume of gas = ?

`T_1` = initial temperature of gas =
`22.0^oC=273+22.0=295K`

`T_2` = final temperature of gas =
`15.0^oC=273+15.0=288K`

Now put all the given values in the above equation, we get:

`(0.974 atm* 27.5 mL)/(295K)=(0.993 atm* V_2)/(288K)`

`V_2=26.3mL`

Therefore, the final volume of gas will be, 26.3 mL