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yeah it is good, i think you can also use Tc-99m for industry, though im not entirely sure where. leaks in pipe systems maybe

thanks, thats just what i needed

lol, urs is right too, mine is a little more detailed, i assume we got it form conq cause i remeber "getting a reading as a function of altitude and geographic position" those exact words They can also be used on balloons rather than satelittes too

Could anyone give me a detailed process of the formation of acid rain (both So2 and NOx if possible) including equations Thanks

uv photospectrometers. they are gound based instruments which measure the intensity of light in a wavelength which ozone absorbs, and then the intensity of light either side of this which ozone doesnt absorb. This will give a reading of the ozone concentration at that particular verticle area...

yep that (its actually technetium-99m) and cobalt 60 for industry do we need one for agriculture or is that just for phsyics?

i had 3 pens run out in my english trial :s so i bring 5 now just in case, but u dont need white out (they apparently hate it, and you can still gain marks for crossed out work) but people brought like 2 pencils and rubbers and highlighters into english, i thought that was overkill

well thats good then :)

our teacher said not to use pencil cause most marking is done at night and pencil is verrryy hard to read under low/artificial light (she is also a marker)

Is it acceptable to use red pen in any situation, eg in drawing tables?

i thought u add calcium for co3??

Whats everyones thoughts on wether they think Anion identification will be in the test. Im fine with cations as they are flame test and the pptte reactions are easy to remeber.

10 character limit???

they can also ask a question which combines several dot points into one large question. they have done that in the past

yea, it seems though that ive spent so much time on english this week my chem mark my fall a little. God damn english and my crapness at it, and of course it has to count. Its discrimination i tell you. Me fail english, thats umpossible.

im going for 90 exactly. Higher would be good but not essential. Im hoping for a uia of 90+ for advanced science at unsw. :D

im screwed on the long responses. But i can usually gain most of the marks.

no it didnt :p it doesnt explain why it is the most common salt, there are many salts in the ocean. I guess it is just cause its the most abbundant. That question was in out trial, except our teacher put that in (he changed the option questions cause we hadnt finished the course) so it...

thanlk for that, anyone doing shipwrecks?

These are pretty basic, but I'd just like to clarify the answer: Why does increased molecular weight increase boiling point? Why is NaCl the most common salt in ocean? (Shipwrecks option) thanks