Calculate the final temperature in degrees Fahrenheit of 1.25 liters of gas X at 85 degrees Celsius and 2700 mm/Hg, if the pressure is changed to 2.35 atmospheres and the volume is increased to 2500ml

Use (P1V1/T1) = (P2V2/T2)

Use the same units for P1 and P2.
Use celsius for T1 and T2.
Use the same units for volume
Then calculate T2 and convert to F.