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elginsmarble

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jellytot01

Energy Released

Why is it that if you drop magnesiuk ribbon inot acid, the greater the length of acid, the greater the energy released? i mean, i know its cos there is more magnesium but is there some big scientific...
16:27 Sat 18th Feb 20063 answers, last by elginsmarble 15:03 Mon 06th Mar 2006
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fatgaz

the sun

to scotstone how can there be oxygen in the universe i thought space was a vacuum and without oxygen i thought fire could not exist ?
18:01 Mon 20th Feb 20063 answers, last by elginsmarble 14:59 Mon 06th Mar 2006
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HugoP

ice-water density

The density of ice is less than that of water and therefore ice floats on water. What other substances behave like this? Thanks, HugoP
03:42 Thu 23rd Feb 20066 answers, last by elginsmarble 14:50 Mon 06th Mar 2006
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cool_ant

dna

If I got a girl pregnant, and my brother did a dna test to see if he was the father would the result come back positive?
13:35 Mon 27th Feb 200613 answers, last by Jack Maude 21:34 Tue 14th Mar 2006
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emailia

alcohol burning

Hello I really need to know the equation for the burning of ethanol, propanol, butanol etc., and also the molecule structure- can anyone help?! Thanks!
19:48 Sun 05th Mar 20064 answers, last by emailia 16:24 Sun 12th Mar 2006

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