A copper block of mass 191.7 g is heated from 6°C to an unknown temperature by the combustion of propane. This block is then put in immediate contact with an aluminum block of mass 193.8 g at a temperature of 3.9 °C. The two blocks reach equilibrium at 134.8 °C . Use 0.385 J/(g° C) for the specific heat of copper, 0.903 J/(g°C) for the specific heat of aluminum, and that the enthalpy for the combustion of propane is -2222 kJ. What is the amount of propane burned in moles?