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Thermal physics

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Question 25

A sealed experimental chamber holds 2.4 moles2.4\text{ moles}2.4 moles of a gas at a pressure of 80.0 kPa. The root-mean-square (r.m.s.) speed of the gas particles in the chamber is 620 m s-1, and the mass of each individual particle is 3.3 × 10-26 kg.

What is the volume of the experimental chamber?

(Use Avogadro's constant NA=6.02×1023 mol−1N_A = 6.02 \times 10^{23}\text{ mol}^{-1}NA​=6.02×1023 mol−1.)

A

1.2×10−4 m31.2 \times 10^{-4}\text{ m}^31.2×10−4 m3

B

7.6×10−2 m37.6 \times 10^{-2}\text{ m}^37.6×10−2 m3

C

2.3×10−1 m32.3 \times 10^{-1}\text{ m}^32.3×10−1 m3

D

7.6×101 m37.6 \times 10^1\text{ m}^37.6×101 m3

Markscheme

Thermal physics Questions

  1. A Level
  2. /Physics
  3. /Thermal physics

56 exam-style questions on OCR A A Level Physics Thermal physics, covering Temperature, Solid, liquid and gas, Thermal properties of materials, and Ideal gases. Each one has a worked solution and a mark scheme showing where the marks go.

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