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You don't have to have actual named critics, but I suppose it couldn't hurt

My teacher said there is a 1/4 chance, but she is an idiot. They couldn't do it to us

Thanks, but what I don't understand is how the UV breaks the bromine down

But I think they are asking why ions conduct electricity. Which I can't answer, they just do

It can be measured simply using a conductivity meter.

What is the chemistry behind this substitution reaction?

Yeah, I kinda realised that, and in fact that is what I always do, but I was bored and needed the post

Agreed, as that is what I right about

I'll do the first part for you. A more reactive metal displaces a less reactive metal from solution. From an examination it can be seen that X displaces Y from solution, therefore X>Y. Z displaces Y from solution, therefore Z>Y. X doesn't displace Z from solution, therefore X<Z Join them all...

I think everyone hopes that same thing. Either that, or the poem specified is one of the three I know well

How did you come to that conclusion Melody? How about chemistry?

Na, not impossible. For example I got a mark of 54% in the half yearly, then a band of 85% in the trials, not I am looking for 90% in the HSC

And you can't forget the acidifying of natural bodies of waters, and the poor old pine forests

I consider two to be enough

They have for any HSC papers, and they didn't for the trial. But they can if they want to. I saw them specify 'Alter Ego' in a speciman paper

Go ahead post it up. Because I also use that structure. Usually start with existance, then death, then go from there

Yeah everyone had to clear out for about 10 minutes while the police checked over the building; mighty disruptive And na, it would be some bogan from year 9-10 that dropped out. Our school gets probably 3-4 a year

We also got ten extra minutes, but it was because someone called in a bomb scare so we had to evacuate. God I hate my school

200 in the actual AOS section though

Sounds like you should've started studying earlier