Australia's Science Forum

:D Hi guys, I have to make cakes of synthetic copper mineral ie copper carbonate, sand, plaster and water but the recipe doesnt give any amounts :crazy: Has anyone out there done this? and if so could you give me a rough guide to ratios otherwise I can see myself spending all day trying different co...

Dichloromethane? MariaC

We just did it, its benzoic acid, doesnt dissolve in cold water so use ice to separate, MariaC

Thanks everyone, I found that link as well and got it working so I suppose Ill know for next time MariaC

Unfortunately his the head teacher and is busy every period and both other physics teachers are off today!MariaC

Help, Ive just been asked to set up the microwave apparatus which Ive never used before, somewhere I have a physics workshop book that shows what to plug in were but cant find it need for period three! MariaC

:giggle: Hi, here I do them in the taller plastic specimen jars, when finished I use a tea strainer and put the sodium silicate in a "recycled" bottle for use next time :wink2: It does discolour a little but perfectly fine for a few uses and the plastic specimen jars clean up fine as well!...

You need 28.8g made up to a litre to make 0.1M, therefore 2.88g to make 0.1M/100mls you have approx twice this so roughly 0.2M or 0.174M to be exact (5g devided by 2.88g) I think thats right! MariaC

Very funny, though not to funny when you are trying to build a manifest from scratch, it makes for a very long day MariaC

:-( Hi Everyone, just wondering those of you who use Chemmffx does it take forever to load each page?? Im trying to work out if its the program or my computer, hoping for the latter cos then I can get IT to look at it and try to speed things up a bit :w00t: Im trying to put all our chemstore in and ...

:? Hi Ian yes we made it but as a demo only, its on page 67 of the Science Focus 4 Text, try searching for 1,6-diaminohexane instead of hexamethylenediamine!!!!!!!! to purchase we had some from before my time. We used adipyl chloride. All worked well, VERY FUMEY do in fume cupboard including weighin...

That is exactly what I was looking for, thank you Ian, I just this site! MariaC

Thanks Lis but that list differs from the one I mean, part of it is in the DET "Working with Science" but its not complete marble is 8, slate 17i. I thought it may be a generic DET list MariaC

DET schools seem to use a universal system but I dont have a complete list and now work in a private school does anyone have that list as Im about to embark on this journey, and my theory is if it aint broke dont fix it starts Mica 1, orthoclase feldspar 2a etc MariaC

And it is sssssssssssssoooooooooooooooooo ssssssssssssssslllllllllllllllllllllllllllllllllllllllloooooooooooooooooooowwwwwwwww!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Opps just read 1ml!!!

Hi Rita, how much is in the ampule? it should say on it, cheers MariaC

:wink2: 3% can be bought at chemists, as can 6%. when doing dilutions I always work with the equation c1v1=c2v2 where c is concentration and v is volumn therefore in this example how much (v1) of 6% hydrogen peroxide do I need to say have 100ml (v2) of 3% hydrogen peroxide (c2): 6 x v1=3 x 100 v1=30...

:thumbup: Hope you have a good time, sooooooooooooo soooooooooooorrrrrrrrrrrrrrrrrrrrrrrrrrryyyyyyyyyyyyyyyy to rub it in but my THREE week holiday starts next week :clap3: Im planning some horse riding followed by more horse riding and then possibily a bit more horse riding!!! \:D/ Have fun everyon...

Hi, Ive just heard from the powers that be that Im been approved to come (Friday only) but the payment and paperwork is in their hands, could you let me know if it arrives safely! Maria Carter, Central coast Grammar School, thanks muchly MariaC