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October 28, 2025, 07:18:05 am
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Author Topic: question help required  (Read 2705 times)  Share 

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lanvins

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Re: question help required
« Reply #15 on: August 23, 2008, 04:57:31 pm »
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Quote from: Mao on August 23, 2008, 04:24:01 pm




sorry..last question.... is this suppose to be -49.98 kj g-1?
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Mao

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Re: question help required
« Reply #16 on: August 23, 2008, 05:26:45 pm »
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Quote from: Glockmeister on August 23, 2008, 04:27:05 pm
Mao, it is

Look here http://en.wikipedia.org/wiki/Acetylene


Quote from: lanvins on August 23, 2008, 01:43:28 pm
more questions,

An oxy-acetylene welding torch uses ethene (acetylene) at the rate of 500ml per minute, measured at STP. The reaction is 2C2H2 + 502---> 4CO2+ 2H2O ; H= -2599kj mol-1

1. What is the heat of combustion of ethyne in kj mol-1 and kj g-1

2. Calculate the rate of enery production by the torch in kj per minute.
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