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:

"the periodic table is arranged in order of atomic number."