Question

at constant pressure with the increase in temperature ,the density of a gas.option is .does not change, decreases , increases, increases of decreases depending on gas​

Answer 1

We first note that the speed and hence the kinetic energy of the molecules of an ideal gas depends solely on temperature.

Consider a small area on the wall of the container. Previously when volume was high, it had a lower probability of being hit by a molecule but now space is less, so it will be hit by more molecules so, more pressure will be generated on this area.

Hence pressure increases