As chemistry Evaluative

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Limutus
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#1
Report Thread starter 7 years ago
#1
Has anyone done the chemistry evaluative practical "enthalpy change of combustion" I am doing it soon and I'm very stressed I need help what questions come up?
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Chellecharity
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#2
Report 7 years ago
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Can't tell you exactly what but it's a moderately easy paper.
Revise equations of combustion and balancing them.
Also revise the step by step process of finding out enthalpy change. E.g calcifying energy (e= temp. Change x sph x mass) *change it into KJ* ,
calculating number of moles of fuel used (n=mr) , then dividing the energy by no. Of moles to find KjMol-1

revise the 3 things that affect enthalpy change (standard state conditions)
i got 12/15 and lost marks on stupid idiotic errors such as forgetting to put a minus on ny figure for the enthalpy change of combustion
READ THE PAPER VERY CAREFULLY AND DO EXACTLY WHAT IS SAYS (don't just assume)
other than that, you'll be fine
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Limutus
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#3
Report Thread starter 7 years ago
#3
You're a life saver, thank you
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