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Oh wow really!? So like 90th + would be possible?

So, how's everyone going with them? Also, I just finished doing a paper in the old format, could somebody give me a very rough indication of what percentile I would get with this this mark? 80/110

For 15, It's all about Le Chatelier's Principle. By DECREASING the volume of a system in equilibrium, this pushes the equilibrium in the FORWARDS direction, favouring the FORMATION of the products, in this case Ammonia.

Just curious.. If you do identify the cation/anion, can you just get a new aqueous sample and continue testing for others? Instead of filtering.

Is that just adding in excess?

That's my chem book, i don't really like it that much! I found what you mean though. What does it mean by 'filtrate' inbetween tests?

Guidelines are pretty much just conducting the experiment correctly in class and being specific with which solutions you add.

I need to make a flowchart for an assesment coming up, can anybody help? We're given an unknown solution and have to run through a series of tests. Also, could you be very specific as to what solutions to add/acidify with? For example, instead of saying "add Cl- and it will precipitate" could...

Biology 19/10/12 Chem 6/11/12 Maths Adv 22/10/12 Who has Ancient History and Studies of Religion II?

Thanks, that makes it easier for me!

Anybody? No? Fine!

Consider the function A= x/lnx a) For what values of x is the function differentiable? 2 marks b) Find the gradient of the tangent to the curve when x= θ^2 3 marks c)Find where the gradient of a tangent to the curve is -1...