Boyle's law states that the volume of a gas is inversely proportional to its pressure if the

A. temperature and number of particles are constant.

B. temperature reaches absolute zero.

C. number of particles decreases.

D. temperature and number of particles are doubled

The answer to this question would be A. temperature and number of particles are constant.

The volume of gas can be influenced by the pressure, temperature, and number of the particle. Higher pressure will compress the gas, thus the volume decreased. Higher temperature will make the gas volume increased, this principle is used in ballon gas. Increased number of particle definitely will increase the gas volume.