Please solve this past question for me

2020/2021 CHE431 (Process Design I) TEST Time allowed: 20 mins Estimate the annual operating cost of providing refrigeration to a condenser with duty 1.2MW operating at 5C. The refrigeration cycle rejects heat to cooling water that is available at 40C and has an efficiency of 80% of the Carnot cycle efficiency. The plant operates for 8000 hours per year and electricity costs N36/kWh. [Hint: The refirigeration cycle needs to operate with an evaporator temperature at 7C. The condenser must operate above at 42C ] a) Explain the following terms : heats of combustion ii. specification forms iii. Mill test certificates iv, Clearly differentiate between standard heats of formation and standard heats of reaction between guarantee and warranty