Australia's Science Forum

Hello
I just want to check this. If I'm making acidified solutions to use in a voltaic cell do i add 15mL of 0.1M sulfuric to 1L solution I'm making. Eg Zinc sulfate etc. Or should I use a higher conc. of acid???
I'd appreciate your help.
Thanks Krysia

Hi
We use lemon juice for sour and indian tonic water for bitter

YIPPPPPPPPPPEEEEEEEEEEEEE. We got it working. Nearly had a heart attack when the sparks started I was so excited. Thanks for your help.
Krysia

Hi Smiley , do you use the same power supply for the Crooke's tube. ( maltese cross and paddle wheel ones). Thanks
Krysia

Thanks for all the replies guys. I knew I could rely on you. I had found that website Ev but the coils still don't work. Rang Serrata and they think they maybe faulty. I'm sending them back and trying Scientrific. Thanks again krysia

Hi We recently bought 2 of these things from Serrata. The instructions really only tell what the induction coil is but nor how to use it. We've just spent an hour or more trying to get the spectrum tubes to glow or trying to produce a spark and nthing is happening. It is actually making a noise so s...

Hi Kimmy This looks great and you're so quick to get it done! I recieved messages 3,4 & 6. The book starts at page 40. Is there supposed to be more? I've deleted more stuff so maybe if there is more my mail box may have been full? I'm not that crash hot on computers so I'm really blown away that...

Uh oh Kimmy
I can pleaseeeeeget a copy as well. Everyone is sounding very impressed. You really are a legend.
lkl@queenwood.nsw.edu.au Thanks Kim
Krysia

Flexi what??????????? No one here gets any.

I have the amylase Clarase, perhaps thats my problem. Thanks for all the replies.
Krysia

Hi
One of my teachers always has trouble getting the amylase to work. We get it from Southern Biological. Does anyone else encounter this problem.
Krysia

Don't worry anyone I found it on the CSIRO website.
Krysia :

Has any one got a glow worm torch sheet that they could fax to me. Or post here. Pleasssssssssssseeeeeeee. Krysia

Jazz
everyone here has now done your cobalt equilbria prac and its an absolute winner. Such pretty colours too. Thanks alot for your help.
Krysia

Thanks for the help Rowyrow
has worked a treat.
Cheers
Krysia

One of my teachers has asked for starch agar for Thursday morning. Does anyone know a recipe?
Thanks Krysia

Something I got from this site was to put a liitle rice, sand and water in the bottom of the evaporating basin with a magnetic stirrer and let it go till clean. Works a treat.

I have asked for 24 hours notice and one teacher in particular is excellent and always gives at least 48hours. This year for some reason though they've all lost the plot and have taken to just telling me about pracs they want to do then sending a risk assessment the lesson before. But with 10 of the...

Big YES Rob, that would be very kind of you. http://www.chemtalk.com.au/posting.php? ... =26&t=2763#
Thanks in advance
Krysia

Hi thanks for all the answers. Jazz thats exactly what I was after its for a year 12 equilbrium prac. I got it to work using concentraed (10M) HCl but am reluctant to let the girls use that. Teacher said she'll dem it but I'll give your suggestion ago. Its sounds great. Thanks again. THE WEEKEND IS ...