for He is 5/3. What is c 
for He?
Two moles of helium gas undergo the closed cycle indicated: P = 1 atm, V = 20 L.
a) for He is 5/3. What is c for He?
b) What is P 
?
c) What is V?
d) How much work is done between b and c?
Possibly useless formulae:
