Question

Before the 20th century, chemists and engineers focused mostly on meeting human needs. During the 20th century, chemical engineers primarily focused on increasing profitability of their processes. Which of the following is a NEW major concern for chemical engineers in the 21st century?

A. Innovating products and processes that are sustainable and good for the environment.

B. Making products and processes faster to serve a larger population.

C. Making products and processes larger to get attention on social media.

D.Reverse engineering products to determine how they were made in the past

Answer 1

How do you know?

Answer 2

Which microscopic properties allow Kevlar and spider silk to
be so strong?

A. large strongly charged atoms and forces within tight coils of molecules

B. strong chains of molecules that form tight balls

C.large strongly charged atoms with strong intermolecular forces between layers

D. strong chains of molecules and strong intermolecular forces between
layers

Answer 3

The final three choices are pretty silly. We are faced with an environmental crisis and everyone working on chemical engineering for example is trying to reduce CO2 and Methane and other results of our processes.

Answer 4

I do not know the answer to the second one, not my field. However I would guess:
D. strong chains of molecules and strong intermolecular forces between
layers
BUT heck your text. The answer must be there.

Answer 5

I looked over my test a few times and it literally doesn’t say it. I’ll look again ig

Answer 6

Not my field either but I think D is the most likely correct choice.