Verified answer

pV = nRT =>

T = (pV)/(nR) 

= (1.76 atm)(0.258 L)/[(0.38 mol)(0.08206 L*atm/molK)] 

= about 15K but use a calculator.

Then add on 273.15 to go from Kelvin to Celsius.

T = PV / nR = (1.76 atm) x (0.258 L) / (0.38 mol x (0.082057366 L atm/K mol)) =

14.56 K = −259°C

[Although it is doubtful that the Ideal Gas Equation is still valid at such a low temperature, especially if the gas is anything besides helium.]