When an electron moves up to a higher orbit, a quantum of light energy is absorbed. this quantum of light energy is also known as a(n) a) quark b) photon c) neutron d) alpha particle

What would be the original temperature of a gas that has a volume of 2.0 l and a pressure of 2.0 atm and an unknown temperature that the volume increased to 3.5 l in its pressure decreased to 1.0 atm if the final temperature is measured to be 11°c