Question

question 12 of 30
the graph below shows how the temperature and volume of a gas vary when
the number of moles and the pressure of the gas are held constant. how can
the volume of the gas be increased if the pressure is constant?

a. by decreasing the temperature
b. by letting the gas contract over time
c. by letting the gas expand over time
d. by increasing the temperature

Explanation:

The graph shows a direct relationship between volume (V) and temperature (T) for a gas at constant pressure (Charles's Law). As temperature increases, volume increases (positive linear trend). Option A is wrong (decreasing T would decrease V). Option B: Contracting gas decreases volume. Option C: Expanding over time isn't the cause here; the relationship is with temperature. Option D: Increasing T (per Charles's Law) increases V at constant pressure.

Answer:

D. By increasing the temperature