Is the following sentence true or false carbon atoms can only form a single bond between other carbon atomd?

If a || b and e || f, what is the value of y ?

Which substance has non polar covalent bonds

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?