MEDIUMMCQ SINGLEJEE Advanced ChemistryPhysical ChemistryThermodynamics and ThermochemistryInternal Energy
A system absorbs 10 kJ of heat and does 4 kJ of work. The internal energy of the system
A.Decreases by 6 kJ
B.Increases by 6 kJ✓ Correct
C.Decreases by 14 kJ
D.Increases by 14 kJ
Explanation
According to first law of thermodynamics ∆q = ∆U + W 10 = ∆U + 4 ∆ U = 10 - 4 ∆U = 6kJ Concept of Heat and Work
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