6. What happens to the particles of solids when they heated? A. They freeze
B. They expand
C. They evaporate
D. They change shape

the correct answer is option d

explanation:

i was wrong its d because they dont use cm when calculating square roots

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.

the correct answer would be b. amelia, because the particals of gas move really fast (charged particals) and gas also has a lot of room (particals move independently) so the only answer that has both of those is amelia's.