Question

The average degree of freedom per molecule for a gas is 6. The gas performs 25J of work when it expands at constant pressure. The heat absorbed by the gas is

75J
100J
150J
125J

Answer 1

According to question

Degree of freedom   n = 6

Also  Work Done = W = 25J

So
At constant pressure

heat absorbed
H = n * W
   = 6 * 25
  = 150 J

Thus answer is 3 ) 150 J

Answer 2

The heat absorbed by the gas is 150 Joules.

Given in the question:

Degree of Freedom (N) = 6

Work done in Joules (W) = 25J

It is given that the pressure is constant.

Therefore the amount of work done is  = amount of heat absorbed  

$=H=N \times W=6 \times 25 \text { Joules }=150\ Joules.$

Degree of freedom is each of the parameters that determine the equilibrium of a specific set of molecules.