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'The molar heat of combustion of ethanol is 1,367 kj mol Assuming 100% effeciency, approximately how much ethanol must be combusted to increase the temperature of 3 kg of water from 20 degrees celcius to boiling point?' Thanks in advance

It so happens that english is my weakest subject and I was hoping to find some means of improving my marks. I'm still not exactly sure of the best way but I was considering english at dux college. Anyone do english there? If so is it good? Also if anyone has any other tutors they can reccommend...