Question

Be sure to answer all parts. Select the correct definition for each of the following terms: (a) law of conservation of energy    states that energy can neither be created nor destroyed    states that energy cannot be created or destroyed, and cannot change from one form to another    states that energy cannot be created or destroyed, but it can be changed from one form to another (b) thermochemistry    the study of the conversions among different types of energy    the study of the heat associated with chemical reactions and physical processes    the study of heat in physical processes (c) potential energy    energy possessed by virtue of position    energy associated with the random motion of atoms and molecules    energy associated with motion    energy stored within the structural units of chemical substances (d) endothermic process    a process in which heat is released to the surroundings, so the energy of the system decreases    a process in which heat is absorbed from the surroundings, so the energy of the system increases    a process in which there is no transfer of heat between the system and surroundings (e) exothermic process    a process in which heat is released to the surroundings, so the energy of the system decreases    a process in which heat is absorbed from the surroundings, so the energy of the system increases    a process in which there is no transfer of heat between the system and surroundings

Calculate the change in total internal energy for a system that releases 2.59 × 10⁴ kJ of heat and does 6.74 × 10⁴ kJ of work on the surroundings. Enter your answer in scientific notation.

ΔU = ×10 kJ

Answer 1

All options are selected in accordance to their definition

Internal energy change is found to be

4.15 x 10^4 kJ