3. For the chemical equation SO2(g)+NO2(g)SO3(g)+NO(g) the equilibrium constant at a certain temperature is 3.40.3.40. At this temperature, calculate the number of moles of NO2(g)NO2(g) that must be added to 2.53 mol SO2(g)2.53 mol SO2(g) in order to form 1.10 mol SO3(g)1.10 mol SO3(g) at equilibrium. moles of NO2(g):