A planet has an average distance to the sun of 0.66 AU. In two or more complete sentences, explain how to calculate the orbital period of the planet and calculate it.

The solid xy decomposes into gaseous x and y: xy(s) m x(g) + y(g) kp = 4.1 (at 0 °c) if the reaction is carried out in a 22.4 l container, which initial amounts of x and y will result in the formation of solid xy?