What 2 molecules have a single bond, double bond, triple bond?

If two atoms are bonded to a central atom with no lone pairs,how will they be arranged

Chemistry worksheet - i am not sure what they are asking for exactly?

In vapor-liquid equilibrium in a binary mixture, both components are generally present in both phases. how many degrees of freedom are there for such a system? the reaction between nitrogen and hydrogen to form ammonia occurs in the gas phase. how many degrees of freedom are there for this system? steam and coal react at high temperatures to form hydrogen, carbon monoxide, carbon dioxide, and methane. the following reactions have been suggested as being involved in the chemical transformation: