An ideal gas at 3 atm, 2 L and 300 K is changed to 4 L and 450 K. What is the new pressure in atm?
Answer and explanation
Correct answer: A. 9/4 atm
- Step 1: For a fixed amount of an ideal gas is constant.
- Step 2: atm.
Answer
9/4 atm.
Why not the others: 1 atm: the temperature ratio is inverted. 9 atm: the volume ratio is inverted.
Practise more Thermodynamics.
Free questions with an explanation for every one, and full timed General Education Diploma (GED Oman) mock tests.
More Thermodynamics questions
- An ideal gas at 1 atm, 12 L and 300 K is changed to 4 L and 150 K. What is the new pressure in atm?
- An ideal gas at 3 atm, 2 L and 300 K is changed to 6 L and 450 K. What is the new pressure in atm?
- An ideal gas at 2 atm, 4 L and 300 K is changed to 6 L and 600 K. What is the new pressure in atm?
- A gas absorbs 1200 J of heat and does 500 J of work on its surroundings. What is the change in its internal energy?
- A gas expands at a constant pressure of 100 kPa from 4 L to 6 L. How much work does the gas do?
- A gas absorbs 800 J of heat and does 300 J of work on its surroundings. What is the change in its internal energy?