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Hey @jimmysmith560 isn't it asking for the ethanol content in the vodka and since we know that 40% of the volume is ethanol, shouldn't the moles be divided by the 40% of the aliquot value to give 18.2M? I believe @Yeaidk found the concentration of vodka and not the ethanol as demanded by the...

also this q is generally for the rapid straight line ph changes that occur...

^^^^ esp for strong base - strong acid titrations as can be seen on the titration curves....

@cossinetrue ... might just do a couple of questions that i find hard from each exercise and then crunch past papers

When analysing and documenting the examples, what techniques could I use for Looking for Richard - a list of possible techniques to look out for would be better, since this docudrama format is one that I have not done much of....

How should I approach - I was gonna dive straight into past papers, but realised I need to recap a lot from my textbook as there may be some gaps in my knowledge - should I redo exercises I believe may need to be revisited etc before past papers. I have approx a bit more than 2 weeks...

@lmao1010 Thanks bro - cleared the confusion up!!!

can someone explain why a weak acid + weak base titration is hard in terms of determining the equivalence point - is because since the ph does not change sharply it is hard to recognise the endpoint, hence making it harder to find the pH at equivalence point?

@may22 true true - but Richmond is Stanley's step son tho....

Who does Richard refer to as George in this scene - I do realise that Richmond is Stanley's son, however wasn't his name Henry or something?

@jimmysmith560 think this is the way to answer that question. I had encountered this some time ago and remember it this way...

@lmao1010, do you mind uploading the full question...

@mmmmmmmmaaaaaaa mb should have noticed that - thanks for pointing that out!!!

Does it do with the fact that the log has an absolute sign - which when considering ln(1-x), we should be quite careful off, since it contains a negative x?

shouldn't it be ln(x) + ln(1-x) + c - but the ans says ln(x) - ln(1-x)..........

This is in the vectors topic, though I did not really cover this in depth - could someone explain this in depth?

Does anyone have a good way of remembering what these are?

I have a chemistry practical test coming up on enthalpy or neutralisation and titration - any tips? (prac would be on the enthalpy part)?? Thanks!!!

Hey guys I just wondered what the opening lines in 'Looking for Richard' meant? They are given down below: " Our revels now are ended. These our actors, as I foretold you... ... were all spirits and are melted into air...

the proof is ease, but I am messing up somewhere in the last step regarding the factorisation - thanks for the help: