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2 cards from this section. Quick, good the night before a test.
What is internal energy?
Think about what an object contains in terms of energy.
What does a bomb calorimeter measure?
Consider what happens to the temperature of water in the calorimeter.
What does ∆U represent in thermodynamics?
What does the delta symbol (∆) usually refer to in science?
In a bomb calorimeter, what remains constant?
Consider how the calorimeter is set up.
A system absorbs 300 J of heat and does 150 J of work. Calculate ∆U.
Apply the formula ∆U = q + w.
During a chemical reaction, 1000 J of heat is released while the volume expands doing 200 J of work. Find ∆U.
Keep in mind the signs of energy changes during expansion.
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