Compared to ch4,nh3 has:
a) nh3 molecules have stronger intermolecular attractions than ch4 molecules.
b) nh3 molecules take up more volume than ch4 molecules.
c) nh3 molecules have less kinetic energy than ch4 molecules at stp.
d) nh3 molecules have a higher average speed than ch4 molecules at stp
e) nh3 molecules have a lower average speed than ch4 molecules at stp.

true

hope that

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.

the ratio of the conjugate base to the acid required to attain the desired ph.

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.