Thermal energy question?? 1. The problem statement, all variables and given/known data a 500g iron rod has a temp. of 25 degrees C. how much thermal energy must be added to the rod to double the average kinetic energy of the iron atoms? 2. Relevant equations EH = mc[tex]\Delta[/tex]T 3. The attempt at a solution EH = (0.005 kg)(452 J/kg x [tex]\circ[/tex]C) = 56.5 J but the answer should be 6.73 x 104 help?