QUESTION 1 (10 MARKS) As a Graduate Metallurgist you are working in a plant to produce a product as fast as possible. The process uses a liquid with specific heat capacity of 75.44 J. K1mol1. In the first furnace you start with a temperature of 45C and your aim temperature is 155C. You use 2kg of fuel with a mole mass of 22gmol1. In your second furnace you start at a temperature of 82C and also aim for 155C. You have here 150kg of fuel, the same type as in furnace 1. In furnace 1 you use an element of 1200W and for furnace 2 you use 3650 W. Do metallurgical calculations to determine which furnace you will opt for, with special reference to time. QUESTION 2 (10 MARKS) Calculate the heat required for 2.4kg of steel to be heated from 130C to 920C if the specific heat capacity is 54.6+2.1103T6.5105T2. Mole mass of steel is 56gmol1. If the heat price is R36.50 per 2000J and your budget account is R2420.00 will you be able to buy the energy? Prove by thermodynamic calculations. QUESTION 3 (5 MARKS) A company producing aluminium is using coke as a fuel. The furnace work temperature is 1100C. Is it possible to produce aluminium in this furnace, comment on your answer? Do metallurgical calculations to prove your answer. You are told that when the enthalpy is zero chemical equilibrium is reached. Given: 2Al+23O2=Al2O3C+21O2=COH=216510+169.4TJoulesH=165550+170.2TJoules