We are being asked to write an expression for internal energy in terms of heat and work, and identify the conditions where q and w will be negative
The internal energy (ΔE or ΔU) of a system can be calculated from the heat and work of the system. The relationship between internal energy, heat, and work is shown in the following equation:
Write an equation that expresses the first law of thermodynamics in terms of heat and work.
Under what conditions will the quantities q and w be negative numbers?
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