Question

Heyy frnd need ur help ?????

plzz help me !!!☺☺

Thankyou☺

Answer 1

hii here is your 2 and 3 ans sry i didn't get first answer

hope it is helpful to uu

Answer 2

1) So at Constant Temperature...  

P1*V1 = P2*V2

Here P1 = 0.72  

P2 = 0.9

V1 = 200mL or 0.2 L

So on Putting the Values in Formula, We get...

0.72*0.2 = 0.9*V2

0.144 = 0.9*V2

So V2 = 0.16L or 160 mL

2) Now at Constant Temperature...

V1/T1 = V2/T2  

Here T1 = 300 K

T2 = 300+20 = 320

V2 = 800mL

So V1 = 300/320 * 800

V1 = 15 * 50

V1 = 750

So Change in Volume = 800-750

= 50mL or 0.05L

3) By Avagadro, Boyle's, Charles's Laws We Can Say  

V ∝ n  ______ (1)

V ∝ 1/P ______ (2)

V ∝ T ______ (3)

Adding (1)+(2)+(3)..

V ∝ nT/P

By Removing ∝ Sign.. We get a Constant (R).. Which is Universal Gas Constant  

V = RnT/P

On Rearranging... We Get,

PV = nRT