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104 J of work is done on a certain volume of a gas. If the gas releases 125 kJ of heat, calculate the change in internal energy of the gas. - Physics

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प्रश्न

104 J of work is done on a certain volume of a gas. If the gas releases 125 kJ of heat, calculate the change in internal energy of the gas.

योग

उत्तर

Given:

Q = 125 kJ, W = 104 kJ, ΔU = ? 

Formula:

ΔU = Q - W

∴ ΔU = 125 - 104 = 21 kJ

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First Law of Thermodynamics
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