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Topic: Hess's Law Problem  (Read 4398 times)

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Offline conb

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Hess's Law Problem
« on: April 28, 2008, 10:06:54 PM »
Problem

Result= 2C + 3H2 Yields C2 H6

Three equations

CO2 Yields C + O2            1549.4

H2O Yields H2 +1/2 O2        1125.2

2CO2 +3H2O Yields C2H6 +1/2 O2    6144.4

Need to know steps
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Offline enahs

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Re: Hess's Law Problem
« Reply #1 on: April 28, 2008, 11:43:15 PM »
Go here:
http://www.wwnorton.com/college/chemistry/gilbert/tutorials/ch11.htm
And click view tutorial for Hess's Law
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Offline conb

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Re: Hess's Law Problem
« Reply #2 on: April 30, 2008, 08:33:06 PM »
I know how Hess law works but dont understand how to change 1/2 of compounds. Can someone please help show me the steps to this problem so I can see how it works.
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Offline Astrokel

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Re: Hess's Law Problem
« Reply #3 on: April 30, 2008, 10:46:53 PM »
Quote from: conb on April 28, 2008, 10:06:54 PM
Problem

2CO2 +3H2O Yields C2H6 +1/2 O2    6144.4


The equation is not balanced correctly! I guess you can solve after you get the right balanced equation.

kelvin  ;D
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