solve Q5 in 20 mins thanks

Suppose now that humid atmospheric air is used instead of dry air in the reaction described in Q1. If the combustion is complete with 20% excess air then the chemical reaction follows the equation: 0.7CH4+0.3C3H8+3.48(O2+3.76N2+0.04H2O)1.6CO2+2.7392H2O+0.58O2+13.0848N2 How much water vapour is there in the product gas mixture, per 9.23kg of dry product gas, in g? Give only the numerical part of your answer, to 3 significant figures. Assume the fuel mixture in Q4 enters the reaction chamber at 25C at 101.3kPa, with the humid air oxidiser (with 0.04mol2Ofor every mol of O2 ) at 35C and 101.3kPa. If the products are measured as being at 800K, what is the total heat released by the reaction in kJ when 4.08kg of fuel mixture is burned completely with 20% excess air? Give only the numerical part of your answer, to 3 significant figures