Internal energy of an element at 1 atm and 25° C is __________ kcal/kg.mole. August 8, 2022 by admin Question: Internal energy of an element at 1 atm and 25° C is __________ kcal/kg.mole. [A]. 0 [B]. 273 [C]. 25 [D]. none of these Answer: Option A Explanation: No answer description available for this question.