Calculate the change in internal energy (ΔE)for a system that is absorbing 35.8 kJ of heat and is expanding from 8.00 to 16.0 L in volume at 2.00 atm.(Remember that 101.3 J = 1 L^∙atm) A) +51.8 kJ B) -15.8 kJ C) -16.6 kJ D) -29.3 kJ E) +34.2 kJ

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Quizplus · Accepted Answer

The change in internal energy (ΔE) is calculated using the formula ΔE = q - w, where q is the heat absorbed and w is the work done by the system. The work done by the system during expansion is calculated as w = PΔV. Here, P = 2.00 atm and ΔV = (16.0 - 8.00) L = 8.00 L. Converting this to joules, w = 2.00 atm * 8.00 L * 101.3 J/L∙atm = 1620.8 J = 1.6208 kJ. Therefore, ΔE = 35.8 kJ - 1.6208 kJ = 34.1792 kJ, which rounds to +34.2 kJ.

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