QUESTION 4 A 130 kg/h of an ideal gas is flowing in a 2-cm ID pipe at 33°C and 200 kPa. The gas exiting from a point at 20 m above the inlet point at 150°C and 1003kPa. Assuming the average molecular weight of the gas is 16 g/mol and assuming steady state flow: a. Determine the inlet and outlet velocities of the gas. b. Determine the change in both kinetic and potential energy of the gas in watt. c. If liquid was flowing in the pipe, would there be any increase or decrease in the kinetic and potential energies, support your answers without calculation.

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