The ideal gas equation and kinetic theory Quiz
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5 questions, one answer each
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1. A fixed mass of gas at 300 K and 2.0 × 10⁵ Pa expands at constant temperature from 1.0 × 10⁻³ m³ to 4.0 × 10⁻³ m³. What is the new pressure?
- A. 1.0 × 10⁵ Pa
- B. 8.0 × 10⁵ Pa
- C. 5.0 × 10⁴ Pa
- D. 2.0 × 10⁵ Pa
2. What is the mean kinetic energy of a gas molecule at 400 K?
- A. 5.5 × 10⁻²³ J
- B. 2.1 × 10⁻²³ J
- C. 1.2 × 10⁻²⁶ J
- D. 8.3 × 10⁻²¹ J
3. Which quantity is the same for all ideal gases at one temperature?
- A. Mean square speed
- B. Mean kinetic energy of a molecule
- C. Root mean square speed
- D. Density
4. The temperature of a fixed mass of gas at constant volume rises from 300 K to 450 K. What happens to the pressure?
- A. It rises by a factor of 1.5
- B. It doubles
- C. It falls by a factor of 1.5
- D. It stays the same
5. Why must the plunger be moved slowly in a Boyle's law experiment?
- A. To keep the mass of gas constant
- B. To keep the temperature constant
- C. To read the gauge more easily
- D. To reduce the pressure