Question

When a monoatomic gas expands at constant
pressure, the percentage of heat supplied that
increases temperature of the gas and in doing
external work in expansion at constant pressure is​

Answer 1

Answer:

40%

Explanation:Mark me as brainliest

Answer 2

Answer:40%, 60%

Explanation:

According to the first law of thermodynamics,

Q = U + W

Now, at constant pressure,  

W = PΔV=nRΔT

U = nC  

v

​  

ΔT

For, a monoatomic gas, C  

v

​  

=1.5R

Thus, Q = 2.5nRΔT

Now,  

Q

U

​  

=  

2.5R

1.5R

​  

=60%

Similarly,  

Q

W

​  

=  

2.5R

R

​  

=40%