items 3-6 please. I need answers thank you

3. Assume that the pipe is smooth and that air at 64.4F flows isothermally with a flow rate of 272 kg/min. Determine the pressure (in kPa) at a section which is 0.124 mi downstream of a 30-cm-ID pipe whose pressure at the upstream section is 5.43 atm. 4. Find the velocity (in ft/s) at a second point a short distance away, where the pressure is 83 psia, from the isentropic flow of nitrogen gas in a 2-in-ID pipe. At the first point, the velocity is 409 ft/sec, pressure is 85 psia, and unit weight is 0.655 lb/ft3. 5. Find the pressure (in KPa) at a second point on a streamline, where the velocity is 150 m/s. At the first point, the velocity is 409 ft/sec, pressure is 85 psia, and unit weight is 0.655 lb/ft. At one point on a streamline in an isentropic airflow, the velocity is 30.5 m/s, pressure is 350 kPa (absolute), and unit weight is 0.028 kN/m3. 6. Recalculate Example No. 4 of Module 4 for the same conditions except for the following assumed changes: - The line between the tanks is 500m (instead of 600 ft); - The pipe is a 6-in schedule 40 commercial steel (instead of 4-in schedule 40); - The flowrate of the brine is 24,000 gal/hr (instead of 400 gal/min); and - In the line are 2 fully opened diaphragm valves, 3 standard tees, 4 long radius 90 ell, and 6 couplings (instead of the 2 gate valves, 4 tees and 4 ells)