Answer: 318 K
Explanation:
Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.
The combined gas equation is,
[tex]\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}[/tex]
where,
[tex]P_1[/tex] = initial pressure of gas = 231 kPa
[tex]P_2[/tex] = final pressure of gas = 168 kPa
[tex]V_1[/tex] = initial volume of gas = 3.25 L
[tex]V_2[/tex] = final volume of gas = 4.35 L
[tex]T_1[/tex] = initial temperature of gas = [tex]54^oC=273+54=327K[/tex]
[tex]T_2[/tex] = final temperature of gas = ?
Now put all the given values in the above equation, we get:
[tex]\frac{231\times 3.25}{327}=\frac{168\times 4.35}{T_2}[/tex]
[tex]T_2=318K[/tex]
At 318 K of temperature will the same gas take up 4.35 liters of space and have a pressure of 168 kPa
