Hess's law _____.
A.) makes it possible to calculate H for complicated chemical reactions
B.) states that when you reverse a chemical equation, the sign of H does not change
C.) determines the way a calorimeter works
D.) describes the vaporization of solids
Please help - I think it is A
I don't like any of the choices; however, B, C, and D are cockeyed answers so I would pick A. The reason I don't like A is because it also makes it possible for simple reactions.
It is A