(Q=+50 J, W = -50 J) is the situation that would cause the greatest increase in the motion of molecules in a system. Option D is correct.
Heat energy is produced by the movement of minute particles known as atoms, molecules, or ions in liquids, solids, and gases.
Heat energy may be transmitted from one substance to another, and heat is defined as the flow of energy caused by a temperature differential between two things.
Heat added to the system is taken as positive and work done by the system is taken as positive.
If the heat is added to the system and work is done by the system the kinetic energy in the system increases resulting in the greatest increase in the motion of molecules in a system.
(Q=+50 J, W = -50 J) is the situation that would cause the greatest increase in the motion of molecules in a system.
Hence, option D is correct.
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