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The change in internal energy U of a system is ... - SS2 Chemistry Chemical Thermodynamics Question

The change in internal energy (ΔU) of a system is given by:

 

A

ΔU = q - w

 

B

ΔU = q + w

 

C

ΔU = q/T

 

D

ΔU = -q - w

correct option: a
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