Melting Point - Chemistry Experiment
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Write a simplified report of melting point experiment just title, result, discussion and calculation. Below is the data:
Solid Sample Temperature Starting melt end melting
A 113 124
B 117 127
C 118 129
Unknown#2 118 127
Unk+C 115 125
Unk+B 117 127
The best melting point is B with the Unknown Which is benzoic acid.
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Solution Summary
The solution shows how to interpret lab results in a logical manner, starting with the basic concepts. The solution is easy to follow and offers better understanding of the subject matter.
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- "Thankyou for the feedback. I have a few question though; With the first statistic about cost below... “According to Sigma-Aldrich catalog, cost of 1L octane is AUD $ 392.00, whereas the cost of 1L ethanol is AUD $196.00. Moreover, if ethanol is obtained from sugar industry as a by-product, it may cost even less. Source of oxygen is ambient atmosphere, so it costs nothing. So ethanol is much cheaper than petrol, in fact it is half-priced: AUD $ (392-196) = $ 196.” I didn't think it made sense because the cost of petrol per litre is normally a dollar something or even less than a dollar not a couple of hundred of dollars. For example, a statistic that I found in america was: "U.S. ethanol production costs are about $1.20 per gallon of ethanol, or $1.82 per gallon on a gasoline-equivalent basis." However, I was wondering whether you could find an Australian statistic. Also, you mentioned that H20 is not a greenhouse gas. However, in the combustion equations it is actually carbon dioxide and water vapour which are produced and they are both greenhouse gases. Finally, how do I calculate the energy efficiency of ethanol and petrol? "
- "Thank you!"
- "Didnt really answer my questions but gave me a start at least."
- "Once again this is tremendous help I can't thank you enough for not only working the problem but explaining in detail how and why!! KR"
- "Awesome thank you so much for the help!!!"
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