Answer : The pressure after the temperature change is, 0.75 atm.
Solution :
According to the Gay-Lussac's Law, the pressure is directly proportional to the temperature of the gas at constant volume and number of moles.
(At constant volume and number of moles)
Or,

where,
= initial pressure = 0.82 atm
= final pressure = ?
= initial temperature = 
= final temperature = 
Now put all the given values in the above formula, we get the final pressure of the gas.


Therefore, the pressure after the temperature change is, 0.75 atm