13. Which response includes all of the following substances that have H = 0, and no other substances?
I. HCl(g)
II. Na(s)
III. HCl(aq)
IV. F2(g)

A.
I and II
B.
II and IV
C.
I, II, and IV
D.
II
E.
I, II, III, and IV

14. Renewable energy sources are essentially inexhaustible.
TRUE but this remains a controversial issue. Please check your latest textbook.

15. Given the following reactions

is 44 + 483 = 527 kJ.
A.
-395.62
B.
-527.65
C.
439.63
D.
571.66
E.
527.65