An ideal gas is at 29 ∘C. The gas is cooled, reducing the thermal energy by 10.0%. What is the new temp?

26.1°C

Explanation:

Initial temperature of an ideal gas is 29°C. If the thermal energy is reduced by 10% after cooling, the temperature of the gas has reduced by (10% of 29°C)

= 0.1*29

= 2.9°C

The new temperature = initial temperature - reduction

= 29°C - 2.9°C

= 26.1°C