please help me with a chemistry problem!!?

  • Thread starter Thread starter M.R.H.
  • Start date Start date
M

M.R.H.

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Consider the reaction shown below:

A + 3B --------> 2 C delta H= 138.44kJ

2/3C ----------> 1/3 A + B delta H= ???

the correct answer is -46.15 kJ
I have n o idea on how to find this. i have been trying to figure it out for a long time
can someone who understands please help me out.

thanks
 
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