0.25 moles of ammonia undergo a state change from 500 kPaa and 0.24m 3 to 9.5 Mpaa, 0.012 m 3 . Find a) U; b)

0.25 moles of ammonia undergo a state change from 500 kPaa and 0.24m ³ to 9.5 Mpaa, 0.012 m ³ . 

Find 

a) ΔU;

b) ΔH; 

c) ΔS