A glass vessel contains 28 g nitrogen gas. Assuming ideal behavior, which of the processes listed below

Question:

A glass vessel contains 28 g nitrogen gas. Assuming ideal behavior, which of the processes listed below would double the pressure exerted on the walls of the vessel?
a. Adding enough mercury to fill one- half the container.
b. Raising the temperature of the container from 30.oC to 60.oC.
c. Raising the temperature of the container from 273oC to 127oC.
d. Adding 28 g nitrogen gas.