Butane gas (c4h10) is burned with 20% excess air in a combustor. the temperature and pressure of the intake air and fuel are 400k and 101 kpa respectively. the temperature of the exhaust is 1600k and the total mass of fuel burned is 65kg. write out the balanced equation, determine the enthalpy of the products and reactants, and determine the heat transfer from the combustor. the water in the exhaust is a vapor. balanced equation: enthalpy of reactants hreactants hfuel hoxygen hnitrogen enthalpy of products hproducts - _ h. h. h. heat transfer q- kj