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I'm doing a 2005 hsc Q on the heat of combustion and i need to give a reason why ther experimental valye for the heat of combustion of ethanol is different from the theoretical value........ i can only think of maybe wind chanaging the results..... and i dont even know if thats anywhere near...

hi all, i was just wondering, i am studying imaginative journeys and we did Coleridge's poems as our prescribed text. I was wondering if anyone actually knew how many poems we are meant to discuss in our area of study essay. Since we only have 40mins to write about prescirbed, stimulus booklet...

i cannot find info on biopol anywhere i think i have spent about 10 hours on the net fruitlessly searching... i need stuff on its properites, the orgnaism or enzyme that is used to produce it, uses or potential uses and how its manufactured (diagrams too) If anyone could help, even pointing me...

i need serious help...... my teachers keeps confusing me on the difference between isomers and allotropes and the notes i have dont help and the net has made things worse!! if anyone knows the difference (or if they are the same) i just want to know what on earth they are!! thanks heaps xxxxxxx