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April 03, 2026, 06:20:00 am
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Author Topic: heat of combustion question  (Read 594 times)  Share 

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Shashim

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heat of combustion question
« on: July 31, 2012, 11:06:33 pm »
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from 2CH3OH + 3O2 = 2CO2 + 4H2O

I figured out that the mass of methanol used was 2.353g
energy absorbed by water is 16800J
number of moles of methanol used is 0.07353125mol

Would heat of combustion be 16800/0.07353125? I'm really lost.

It would be really nice if anyone explains this to me.

Thank you.
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Surgeon

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Re: heat of combustion question
« Reply #1 on: July 31, 2012, 11:10:55 pm »
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I'm pretty sure that's correct but I'm not certain. I'll let a pro take this one.
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Tonychet2

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Re: heat of combustion question
« Reply #2 on: August 04, 2012, 07:51:54 pm »
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yep the answer only looks incorrect becus its so large but its correct because most of the answers are in kJ just divide by 1000 so itll look more correct - which it is
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