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Thermodynamics

12 practice questions, each with the answer and an explanation.

Practise Thermodynamics now

Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 12 questions

  1. An ideal gas at 3 atm, 2 L and 300 K is changed to 8 L and 900 K. What is the new pressure in atm?
  2. An ideal gas at 2 atm, 4 L and 300 K is changed to 3 L and 150 K. What is the new pressure in atm?
  3. An ideal gas at 1 atm, 6 L and 300 K is changed to 4 L and 150 K. What is the new pressure in atm?
  4. An ideal gas at 1 atm, 12 L and 300 K is changed to 8 L and 600 K. What is the new pressure in atm?
  5. An ideal gas at 3 atm, 2 L and 300 K is changed to 3 L and 900 K. What is the new pressure in atm?
  6. A gas expands at a constant pressure of 100 kPa from 4 L to 7 L. How much work does the gas do?
  7. A gas absorbs 500 J of heat and does 100 J of work on its surroundings. What is the change in its internal energy?
  8. A gas expands at a constant pressure of 200 kPa from 4 L to 6 L. How much work does the gas do?
  9. A gas expands at a constant pressure of 150 kPa from 4 L to 6 L. How much work does the gas do?
  10. A gas absorbs 1200 J of heat and does 100 J of work on its surroundings. What is the change in its internal energy?
  11. In an isothermal expansion of an ideal gas, the internal energy
  12. Which law states that heat cannot flow spontaneously from a colder body to a hotter body?

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