Answer The value of
and
is, 40.79 kJ and 37.7 kJ respectively.
Explanation :
Heat released at constant pressure is known as enthalpy.
The formula used for change in enthalpy of the gas is:

Now we have to calculate the work done.
Formula used :

where,
w = work done = ?
P = external pressure of the gas = 1 atm
= initial volume = 
= final volume = 
Now put all the given values in the above formula, we get:


Now we have to calculate the change in internal energy.



Thus, the value of
and
is, 40.79 kJ and 37.7 kJ respectively.
This means that there are 7 protons in the nucleus of a nitrogen atom.