The reversible liquid-phase reaction 2A <> R + S was carried out isothermally at 45°C in an intermittent reactor. If the reaction is elementary, calculate the values of the reaction constants speed (k1 and k2) when a conversion of 30% is achieved in 20 minutes with CAo = 0.3 mol/L, CRo = Cs = 0, and the equilibrium constant has been reported as 3.61 at 45°C.