What amount of heat was obtained by the gas if its internal energy increased by 0.5 MJ and at the same time it did 300 kJ work?

Given: ΔU (change in internal energy) = 0.5 MJ (0.5 * 10 ^ 6 J); A (work done by the gas under consideration) = 300 kJ (300 * 10 ^ 3 J).
The heat obtained by the gas under consideration: Q = ΔU + A = 0.5 * 106 + 300 * 10 ^ 3 = 800 * 10 ^ 3 J (800 kJ).



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