Monday
October 20, 2014

Homework Help: Science

Posted by Paul on Monday, November 8, 2010 at 3:50pm.

I conducted an experiment of the heat of combustion for three alcohol fuels, methyl, propyl and ethyl.
The results were:
Methyl -
mass before was 231.81g
temp of water before heating was 15 deg c.
temp of water after heating was 40 deg c.
mass of methyl after heating 229.92g
volume of water heated 112 ml
result 1481 cal/g
ethyl -
mass before was 183,01g
temp of water before heating was 11 deg c.
temp of water after heating was 41 deg c.
mass of methyl after heating 180.90g
volume of water heated 130 ml
result 1848 cal/g
Propyl -
mass before was 232.23g
temp of water before heating was 13 deg c.
temp of water after heating was 39 deg c.
mass of methyl after heating 231.08g
volume of water heated 116 ml
Result 2623 cal/g
I need to analyse my results and draw a conclusion from them can you help me please.

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