Ideal gases Quiz
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5 questions, one answer each
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1. A gas at 300 K and 1.0 × 10⁵ Pa is heated at constant volume to 450 K. What is the new pressure?
- A. 1.5 × 10⁵ Pa
- B. 6.7 × 10⁴ Pa
- C. 1.0 × 10⁵ Pa
- D. 4.5 × 10⁵ Pa
2. A fixed mass of gas at 100 kPa occupies 6.0 × 10⁻³ m³. It is compressed to 2.0 × 10⁻³ m³ at constant temperature. What is the new pressure?
- A. 33 kPa
- B. 200 kPa
- C. 600 kPa
- D. 300 kPa
3. Which of these is the SI unit of the molar gas constant?
- A. J K⁻¹
- B. J mol⁻¹
- C. J mol⁻¹ K⁻¹
- D. mol K J⁻¹
4. A gas expands from 1.0 × 10⁻³ m³ to 4.0 × 10⁻³ m³ at a constant pressure of 2.0 × 10⁵ Pa. How much work does the gas do?
- A. 200 J
- B. 400 J
- C. 800 J
- D. 600 J
5. What is the mass of one molecule of a gas of molar mass 32 g mol⁻¹?
- A. 5.3 × 10⁻²⁶ kg
- B. 1.9 × 10²⁵ kg
- C. 5.3 × 10⁻²³ kg
- D. 3.2 × 10⁻² kg