A simple ideal Brayton cycle operates with air with minimum and maximum temperatures of 23 C and 1166 C. It is designed so that the minimum cycle pressure is 61 kPa and the pressure ratio is 8. Assuming that specific heat is constant (Cp = 1.005 kJ kg-1 K-1 and cv = 0.718 kJ kg K-1) calculate the amount of work required to compress air in kJ kg-1. Round the result to the nearest whole number without decimals and enter the numerical value only without units (e.g. 123, 1234, 12345, but not 123 kJ kg-1). Partial credit is available for this question.