Calculate the change internal energy (ΔE)for a system that is giving off 65.0 kJ of heat and is performing 855 J of work on the surroundings. A) 64.1 kJ B) -64.1 kJ C) -65.9 kJ D) 6.00 × 10² kJ E) -6.00 × 10² kJ

Question

Quizplus · Accepted Answer

The change in internal energy (ΔE) is calculated using the formula ΔE = q + w, where q is the heat exchanged and w is the work done. Here, q = -65.0 kJ (since the system is giving off heat) and w = -0.855 kJ (since the system is doing work on the surroundings). Thus, ΔE = -65.0 kJ - 0.855 kJ = -65.855 kJ, which rounds to -65.9 kJ.

Calculate the Change Internal Energy (ΔE)for a System That Is