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omid's chemistry book says "the energy released form the combustion of 1 cm3 of liquid hydrogen is four times less then that of petrol. however the energy per gram is higher than other fuels, so liquid hydrogen is used as fuel in the booster rockets of the space shuttle"Can you please tell omid what it really want to mention specially the bold parts 
I'd need a bit more information than that.What did you add to what?
I think that if I did a search on the chemical formula of the product I would be able to find out a couple of things about it like the colour and perhaps a name (or two) for it.What are you hoping to find out?
It's the nature of science that you dont really know what will happen until you have finished.
Quote from: Bored chemist on 15/11/2009 20:36:24I'd need a bit more information than that.What did you add to what?omid used the equation below;(NH4)2SO4 + FeSO4 FORMS (NH4)2SO4.FeSO4.6H2Oenough or need more? 
Look for Mohr salt.