The internal energy (ΔE or ΔU) of the system can be calculated from the heat (q) and work (w) of the system where
ΔE = q + w
The signs of heat (q) and work (w) of the system can be either negative or positive depending on the key words stated.
A system receives 425 J of heat from and delivers 425 J of work to its surroundings. What is the change in internal energy of the system (in J)?
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Our data indicates that this problem or a close variation was asked in Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition. You can also practice Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition practice problems.