Question

1.
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 me. I cannot fingure this out.

Thank You

Answer 1

See your later post.

Answer 2

Did you ever get an answer??

Answer 3

1. Hess's law ____.
(1 point)
(1 pt) makes it possible to calculate H for complicated chemical reactions

(0 pts) states that when you reverse a chemical equation, the sign of H does not change.

(0 pts) determines the way a calorimeter works

(0 pts) describes the vaporization of solids

Answer 4

The answer is A.