Question

0 0 200 400 600 temperature (k) what does the graph show? a. the volume and temperature of the gas are not related b. as the pressure of a gas increases, its volume decreases. c. if the temperature of a gas doubles, then its volume will also double. d. as the volume of the gas increases, its temperature decreases.

Explanation:

The graph's x - axis is temperature (K). Option A is wrong as volume and temperature of gas (at constant pressure) are related (Charles's law). Option B is about pressure - volume, but the graph is temperature - related, so B is out. Option D is incorrect as Charles's law says volume and temperature (at constant pressure) are directly proportional, so as volume increases, temperature should increase. Option C follows Charles's law ($V_1/T_1 = V_2/T_2$), so if temperature doubles, volume doubles at constant pressure.

Answer:

C. If the temperature of a gas doubles, then its volume will also double.