Question

Hess's law ____.

A) makes it possible to calculate \(\Delta\)H for complicated chemical reactions

B) states that when you reverse a chemical equation, the sign of \(\Delta\)H does not change.

C) determines the way a calorimeter works

D) describes the vaporization of solids

Answer 1

I am not the type of person to help with Chemistry, but if I remember correctly, Hess's law states that when you reverse a chemical equation, the sign of \(\Delta H\) \(\textbf{does}\) change.

Using the rest of my knowledge I can concluded that C & D are bogus answers, leaving us with A.

Hess's law on Wikipedia:
https://en.wikipedia.org/wiki/Hess%27s_law

Answer 2

Thanks

Answer 3

No problem.