posted by Anonymous .
To what temperature must a gas sample initally at 13 degrees be raised in order for the avarage energy of its molecules to double?
in general, temperature is related to the average energy (vibration, movement) of molecules. Double the temperature, you double the energy. http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/kintem.html
so if you were at 13C, or 286K, double that to double average energy. Ans: 576K, or 299C