1. The problem statement, all variables and given/known data At constant volume and number of moles T1/T2=P1/P2 As per ideal gas equation So given data is T1=27 degree celcius P1=80 Cm ,P2=120 Cm T2=? 2. Relevant equations T2=P2/P1 multiplied T1 3. The attempt at a solution:120 cm/80cm multiplied by 27 degree celcius =40.5 degree celcius It is wrong because if it is done for klelvin 120 cm/80cm multiplied by (27+273.15) T2=450.225 K This 450.225 K is when converted into celcius it gives 177.075 degree celcius Thus T2=450.225 K=177.075 degree celcius "≠"40.5 degree celcius where I am wrong?