Which of the following presents the steps of the engineering process in the correct order? A. Identify a need, know the background, make a plan, do the work, test the results, evaluate and redesign B. Identify a need, make a plan, know the background, do the work, test the results, evaluate and redesign C. Identify a need, know the background, do the work, make a plan, evaluate and redesign, test the results D. Know the background, identify a need, make a plan, evaluate and redesign, do the work, test the results

the reaction mixture contains some ammonia, plus a lot of unreacted nitrogen and hydrogen. the mixture is cooled and compressed, causing the ammonia gas to condense into a liquid. the liquefied ammonia is separated and removed. the unreacted nitrogen and hydrogen are then recycled back into the reactor .

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"

smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.