Question

a sample of monoatomic gas is at 20 degree centigrade if the pressure and the volume number what will be the temperature final?​

Answer 1

Answer:

Since the gas is monoatomic

⇒C

v

=

2

3R

and C

p

=

2

5R

Now,

Let the no of moles of has =n moles

We know that,

at constant pressure

ΔQ=nC

p

ΔT

⇒20=n×

2

5R

×10

⇒n=

5R

4

and, at constant volume

ΔQ=nC

v

ΔT

putting the values of n and ΔT,C

v

ΔQ=

5R

4

×

2

3R

×10

⇒ΔQ=12 J

:)