Author Question: Why is it significantly less costly to purify fresh water through reverse osmosis than to purify ... (Read 48 times)

Zulu123 · **on:** Aug 27, 2018

Why is it significantly less costly to purify fresh water through reverse osmosis than to purify salt water through reverse osmosis?

A) The osmotic pressure exerted by fresh water is less.
B) The osmotic pressure exerted by fresh water is greater.
C) For non-coastal regions, the salt water needs to be transported many miles from the oceans.
D) The expense of reverse osmosis is not dependent upon the salt concentration in the water.

Question 2

The scanning probe microscope ________.

A) uses very large mirrors and lenses to enhance an image
B) can scan small things from a large distance away, such as the surface of the Moon
C) characterizes the surface atoms of a material
D) vaporizes a substance, then analyzes and manipulates the components