Take this Quiz: A-Level Physics: Thermal Physics and Ideal Gases | Zestly

Question 1

A 0.50 kg block of a metal at 20 °C is heated by a 100 W heater for 120 seconds, resulting in a final temperature of 50 °C. Assuming no heat loss to the surroundings, what is the specific heat capacity of the metal in J kg⁻¹ K⁻¹?

Accepted Answer

$800$

Question 2

Which of the following are fundamental assumptions of the kinetic theory model for an ideal gas?

Accepted Answer

Collisions between molecules are perfectly elastic.

Question 3

A fixed mass of an ideal gas is held at a constant temperature. If the initial pressure is 200 kPa and the volume is 0.040 m³, what will the new pressure be if the volume is compressed to 0.010 m³?

Accepted Answer

$800 	ext{ kPa}$

Question 4

A sample of 0.20 moles of an ideal gas is kept in a container at a pressure of 1.5 × 10⁵ Pa and a temperature of 300 K. What is the volume of the gas in m³? (Use the gas constant $R = 8.31 	ext{ J mol}^{-1} 	ext{ K}^{-1}$)

Answer

$0.0015 	ext{ m}^3$

Answer

$0.0033 	ext{ m}^3$

Answer

$0.0045 	ext{ m}^3$

Answer

$0.0090 	ext{ m}^3$

Question 5

A substance requires 450 kJ of energy to change from a solid to a liquid at its melting point. If the mass of the substance is 1.5 kg, what is its specific latent heat of fusion in J kg⁻¹?

Answer

$1.5 	imes 10^5$

Answer

$2.0 	imes 10^5$

Answer

$3.0 	imes 10^5$

Answer

$6.75 	imes 10^5$