Four molecules each consist of a central atom with other atoms around it. In each of the molecules, the atoms surrounding the central atom are all of the same element but are different than the central atom. Each of the four molecules has a different shape. Which shape produces a polar molecule?

Explanation:

The given data is as follows.

      = 85 psig,   = = 15 psia

        Q = 1620 gpm,  d = 2.5 inch,     l = 8 ft = 2.4384 m

According to Darey-Weisbach equation,

                         ......... (1)

Value of 'f' will be decided on the basis of Reynold number.

As, it is known that

where,   = kg/ms

As it is known that 1 gpm =

So,   = 3.67 gpm

Therefore,   Q =

                        =

                         = 0.1226

In, 1 inch = 2.54 cm = 0.0254 m

Therefore, d = 2.5 \times 0.0254 = 0.0635 m

                V =

                    =

                    = 38.73 m/s

Hence, we will calculate Reynold number as follows.

              =

                             = 2459355

As > 2000 then, it means that flow is turbulent.

As, f = 0.079

        = 0.001994

Putting all the values into equation (1) formula as follows.    

                                     =

                                      =

Thus, we can conclude that friction loss from the main to the discharge point is .