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Topic: Hess's law  (Read 8031 times)

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Offline sparkly

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Hess's law
« on: March 25, 2009, 11:11:22 PM »

Hess's law ____.
Choose one answer.
   a. determines the way a calorimeter works    
   b. makes it possible to calculate ΔH for complicated chemical reactions    
   c. states that when you reverse a chemical equation, you must change the sign of ΔH    
   d. describes the vaporization of solids    

I keep leaning toward B, but then i think it could be A too. B just seems too simple of an answer. What do you think?

Offline Borek

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Re: Hess's law
« Reply #1 on: March 26, 2009, 03:43:16 AM »
I would go with B too.
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Offline super_kaka1402

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Re: Hess's law
« Reply #2 on: March 26, 2009, 05:25:17 AM »
A and B are both true, but B is not the best answer so my choice is A !
 ;)

Offline Borek

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Re: Hess's law
« Reply #3 on: March 26, 2009, 06:18:41 AM »
Calorimeter works thanks to the energy conservation, it doesn't need Hess law.
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Offline Iwillbethebest

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Re: Hess's law
« Reply #4 on: March 27, 2009, 09:06:45 PM »
id say B or C
but im more inclined on B

Offline Xenophilius

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Re: Hess's law
« Reply #5 on: March 28, 2009, 06:52:33 AM »
I think B would be much more appropriate
XENOPHILIUS....

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