Practice First Law Of Thermodynamics (conservation Of Energy) (5.2)

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9 questions

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6 sample questions

Question 1.
What does the First Law of Thermodynamics state?
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Think about energy transfers in daily life.
Question 2.
What does ΔU represent?
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Relate it to heat added and work done.
3Question 3.
According to the First Law of Thermodynamics, energy can:
- Be created
- Be destroyed
- Change forms
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Think about examples of energy transformations.
4Question 4.
The equation ΔU = Q - W describes the relationship between:
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Relate to what happens when heat is added or produced by work.
Question 5.
A 200g gas container has an internal energy of 500 J. It absorbs 100 J of heat and performs 50 J of work. What is the new internal energy?
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Don't forget the role of initial internal energy!
Question 6.
In an adiabatic process, 300 J of work is done on a gas. What happens to the internal energy, assuming no heat exchange?
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Consider the definition of adiabatic processes.

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