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I need urgent help.
16 - female - Britain (this is important because ideally, I'd like someone doing A level chemistry - or having done it - to help me, probably with a british exam board because I can relate to that easier - I'm on OCR?)
A week ago today I took up a sixth A level - Chemistry. I have to fit the year's AS course into a 10 week time period before the exam and still get an A. I'm happy with the workload but OCR's books, Chemical Storylines and Chemical Ideas are hard to follow, I find.
My first lesson was a kind of practical exam - a titration with an exam booklet after, like an ISA but not. My teacher quickly went over a quick chemical formula he knew I would need which is:
N= (C x V) / 1000 (if that volume is in cm cubed)
Now it doesn't matter what that means but I found that very easy to remember and refer to. BUT, in the chemical ideas formula book they put most other formulas in very wordy ways which I find hard to comprehend. For example, things to do with moles or Element abundancy.
Does anyone know either a site that's good for learning quick forumale notation like the example above, (and explaining things like spectrometry?) or can you quickly jot down a few equations for me, with what they mean? I will be asking my teacher as well, but its half term at the moment and when I get back to school I will be busy with all the other five a levels too!
Thank you!
ANYONE who has a good knowledge of Chemistry above GCSE or whatever other qualifications they do in other countries, please give me a helping hand :) (link)
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HELLOOOOOOOOOOOOOOoo! I am a chemistry student at the university of british columbia in Canada. So, u having problems in chem???? Well, then chem is tough stuff. First of all when you see anything in chem with cm cubed immediately think ml. I do not know why they use cm cubed in first year or highschool cause in later courses they realize it is pretty pointless most of the time. This site isnt bad for basic understanding of molar ratios. I just hope you are good at division and cancelling things cause that is what I use and what we use at a higher level. Do u have any specific questions? (n=moles at least here it does) V is probably volume ...and honestly i have never used that version of that formula before...
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Rating: 5
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I know that equation means number of moles = concentration x volume all divided by 1000, because somehow the letters drum into my head and i understand it better. My OCR book would explain it a lot lengthier, which is why I don't get it. Thanks for your help. I wonder if you could tell me anything about moles seeing a your a chemistry student? or spectrometry?? Those are the two things I'm extra stuck on !!! thanks for your help, I was in urgent need :P :)
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