Water (25◦c) flows through 1-inch schedule 40 steel pipe at 2.0 gpm. what is the reynolds number of the flow? what is the friction factor? is the flow laminar or turbulent?

Re=8561.79

Friction factor is 0.014

Flow is turbulent flow.

Explanation:

Given that

Diameter ,d=1 in

d=0.0254 m     (1 in =0.0254 m )

Volume flow rate,Q = 2 gpm

We know that

We know that

Q= A x V

So

m/s

V=0.3 m/s

So Reynolds number(Re)

Properties of water at 25 C

Re=8561.79

Re>4000 ,It means that flow is turbulent flow.

Friction factor

If we assume that pipe is smooth

f=0.014.

Friction factor is 0.014

? you expect us to answer this? ? this is your schoolwork, i don't think we can with this, i think it would considering being

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e