5.1.4 - The internal energy as a state Function
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Practice Questions
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What does internal energy represent in a system?
💡 Hint: Think about what types of energy are present in chemical and physical processes.
What is ΔU in relation to heat and work?
💡 Hint: Recall the equation that describes internal energy changes.
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Interactive Quizzes
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What does internal energy depend on?
💡 Hint: Consider the definition of state functions.
In an adiabatic process, what happens to heat (q)?
💡 Hint: Think about what distinguishes adiabatic from other processes.
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Challenge Problems
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A gas in a piston does 200 J of work on the surroundings while absorbing 150 J of heat. Calculate the change in internal energy.
💡 Hint: Remember the sign convention for work done by the system.
Consider a system that has 1000 J of internal energy. If it performs 300 J of work and releases 200 J of heat, what will its new internal energy be?
💡 Hint: Use the internal energy change formula applied to given conditions.
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