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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