When reaction 1) and 2) below are added together, the result is reaction 3).1) h2o(l) + hno2(aq) ⇌ h3o+(aq) + no2‒(aq) k1 = 4.50 × 10‒42) h3o+(aq) + oh‒(aq) ⇌ 2 h2o(l) k2 = 1.00 × 10143) hno2(aq) + oh‒(aq) ⇌ no2‒(aq) + h2o(l) k3=?find the equilibrium constant, k3?