Superheated steam at 10bars pressure and 210oc flows at 2kg/s into a heat exchanger. the steam preheats a reactor feed by transfering 450kw of heat. the pressure drop across the heat exchanger is negligible.
a. draw the flowchart for this process
b. lable all the process strams and unite operations.
c. calculate the enthalpy, temperature, phase and the quality of the resulting stream.

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.