Problem 3. An oxidation reactor is being fed with air to aid in the combustion. The air must first be heated from 25C to 300C at 1 atm pressure and the specific enthalpy change associated with this temperature change for air is 8170J/mol. The inlet velocity of air is 5m/s in pipe of 0.5m ID (inside diameter). You may consider the gas to be ideal. a. Write the First Law of Thermodynamics and simplify it, with justification. Note that this is an open system and the first law for these systems is given by: H+Ek+En=Q+Ws The dots on top of the variables indicate that we dealing with rates (energy per unit time). b. What is the inlet flow rate of air (mol/min)? c. Given that the outlet diameter from this heater is 0.5mID, then what is the outlet velocity (m/s) ? d. Calculate the flow rate of heat required to heat the gas (kW)