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It's to test for metallic ions, which are mostly cations. Can't think of any metallic anions..

Only a minor thing, but it the accuracy of AAS up to ppm or ppb? Not knowing is annoying me. =|

Thanks to both of you =) Good luck with the test. Well at least your experiment was fun!

I've got the outline of the experiment. These are only the first few steps, but can anyone tell me when you start heating the solution and when you have to stir? 1. Weigh 0.5g of ammonium sulfate 2. Add 10ml of water and dissolve 3. Add 2ml of 1M HCl and 100ml distilled water 4. Add 25ml of...

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Well great it's not needed! Well I havn't heard it used in chem before so i'm scratcuing all that from my memory (not that I've actually remembered it yet)

oh ok thanks, zingerburger that makes sense. i tried studying and the more i studied the more i didin't understand when i had previously understood it.. if THAT made sense.

Does anyone know the difference between carbaminohaemoglobin and carboxyhaeomglobin??? or are they the same thing? Any help would be much appreciated! =)

thanks.. if u get any ideas please tell me i've jus figured its showing the way to the future as imaginary journey dusnt sound too gud tho n i can't expand on it ><

HELP NEEDED!! homeostasis - metabolism hey people, does anyone know how metabolism affects homeostasis?? as in.. when an organism wants to keep warm does is increase or decrease metabolism.. and the same ques with keeping cool. if anyone can help please reply! thanks heaps!

Window by Jeannie Baker .. help!!!! hi! i found this really good picture book, but I'm having trouble anaylsing it. could anyone please help me with pts on how this culd relate to imaginative journeys? i need some ideas and techniques to get started. thanks heaps! =)

not only can it be used to reflect on the past, but can also be utilised into visualising or visiting the future btw.. really good pts put forward