The volume of a system becomes twice its original volume on the absorption of 300 cal of heat. The w — Thermodynamics and Thermochemistry Chemistry Question

💡 Solution & Explanation

According to First Law of Thermodynamics: Δ U = q + w. Heat absorbed q = +300 cal. Work done on surroundings (by system) w = -200 cal. Thus, Δ U = 300 - 200 = +100 cal.