Convert 0.0555 m to mm with units going after the number

In which phase(s) do the molecules take the shape of the container?

What is the mass of 4 molecules of co2

Consider the reaction: n2(g) + o2(g) ⇄ 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?