What affect might plate movement have on the size of the ocean basin

(Science)

Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?

What is the subscript for oxygen in its molecular formula

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?