Liquid methanol is fed to a space heater at a rate of 12.0 l/h and burned with excess air. the product gas is analyzed and the following dry-basis mole percentages are determined: ch3oh =0.45%, co2 = 9.03% and co 1.81 %, density of methanol = 0.792 g/ml (4) 7.1 write the equations for the process. 7.2 calculate the feed flowrate in mol/h (3) 7.3 draw and label the material flow diagram which describes the process. (5) 7.4 calculate the fractional conversion of methanol and the mole fraction of water in the product (15) gas. [hint- atom balances may assist] (4) 7.5 calculate the percentage excess air. 7.6 suppose the combustion prod ucts are released directly into a room. list 2 potential problems (4) and 2 measures to control or mitigate these problems.