If the temperature of a gas changes but the number of moles and volumes remain which is the values must also change ?

Correct option is

C

increases by 25%

Ideal gas equation states that: PV=nRT

As temperature remains constant, so PV= constant =k

As pressure decreases by 20% so P

2

=0.8P

⇒PV=(0.8P)V

2

⇒V

2

=

0.8P

PV

=

0.8

V

=1.25V

So volume of gas increases by 25%.

I don’t know

Explanation:

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.