1. The problem statement, all variables and given/known data An ideal gas is at 40°C. The gas is cooled, reducing the thermal energy by 35%. What is the new temperature in °C? 2. Relevant equations I'm not sure there is one? 3. The attempt at a solution Since, in an ideal gas, thermal energy is proportional to temperature, I multiplied 40°C by .35 and got a change of 14°C. After subtracting, I get a resulting temperature of 26°C. But, the online program is telling me this is incorrect? Am I doing something wrong? Thanks!