Below are the steps of the engineering process (not necessarily in order):
a) know the background
b) do the work
c) make a plan
d) identify a need
e) evaluate and redesign
test the results
what is the correct order for these steps?

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?

How many moles of bromine are needed to produce 3.23 moles of potassium bromide

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.