Elements from the alkaline earth metal family and halogens will combine in which ratio?
-2:3
-1:2
-1:1
-none

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?