Australia's Science Forum

Hi Everyone
Does anyone out there know a good experiment for turning cobalt chloride from red to blue.
Thanks Krysia

We recently finished the new building and the only room with air con is the teachers staff room. All the labs have fans. The prep room has nothing, not even any cross ventilation, the air in here doesn't move at all. I recorded the temp. last week and had a high of 34C and a low of 32C. Was so glad ...

Hi
I do the same as Merilyn however when we were audited by OH&S we were told that new MSDS's had to be printed out each year.
Krysia

Hi Ocker
I buy the nitrile gloves they're powder free and latex free. The kids that are allergic to latex here have all been fine with them. They're expensive though at $20.50 a box. They are more chemically resistant than vinyl or rubber.
Krysia

Hi Ellice
you could try having a look at www.instructables.com. They have recipes and instructions for bath salts, bath bombs and even instructions on how to bath your rat!?!?
Have fun
Krysia

Hi Lorrae
I haven't made any fresh eosin for a couple of years. I made it with water and its red. When made with water its to show movement of water in plants or in histology. When made with ethanol its for staining cytoplasm.
Krysia

I have all the usual iodine,bromine water etc as well as 1 bottle of ethanol, adipoyl chloride, 1,6 diaminohexane, buffer solutions, Lipase, trypsin,dyes for electrophoresis and made up solutions of glucose, starch.

Thanks Noona just got my booklet as well. Can't wait to try it.
Krysia

You guys are killing me!!!!!!!!!!!!!! I'm so jealous, it sounds like such fun. Hope the sun stays out for you all and that you have a great trip. Enjoy..........., like you need to be told.
Krysia

HI
There is a good website that has a calculator for working out lots of different solution probs like percent to molar solution or molar to molar etc. If you'd like to try it out the address is
www.cleanroom.byu.edu/MolestoAnything.phtml
Just for future reference if you ever need it.
Krysia

Hi Again that post didn't come out quite like it should. What it is in long hand is that the amount of stock solution required ( here your 5% solution)is equal to the required molarity x molecular weight x volume required divided by the stock percantage x 10. Or for a 0.1M you need 0.1 x 287.54 x100...

Hi Helen Don't know if this will help but I have this formula for percent to molar solutions required molarity x molecular weight x volume required (in mL) mL of stock solution required = ________________________________________________________ stock percentage x 10 Once you have the amount of stock...

Thanks so much guys Fridge it is.

Hi Everyone
Wondering if anyone can help out with how I store Adipyl Chloride. On the box it came in it says store at 2C to 8C. Its class 8. So do I store it in the corrosive cupboard or the fridge? Appreciate your help
Krysia

That is such a beautiful aquarium, the kids are so lucky to have a marine tank. I have a tank here that we have turtles in, there a also some fish but they are turtle food so the amount of fish goes up and down according to how good the turtles strike rate has been. Turtles are great to have at scho...

Congratulations to everyone.
I love weddings, I'll do my sunshine dance in your honour.
Krysia

Hey thanks everyone,
I'm going for the video idea with the stopwatch and frames/sec.
You're all so helpful, witty, intelligent etc etc etc etc.
Krysia

Hi Labgirl
I too have been considering making the switch to teaching, its interesting to read all these posts. Definitely giving me second thoughts.
I was thinking of it from purely a money perspective not a lifestyle choice.
Thanks for the food for thought guys.
Krysia

Thanks Rosalie
We tried that and she wasn't happy with it. Not sure why.
Krysia

Hi Everyone Just wondering if anyone has any ideas that may help me out. One of the physics teachers wants to test time of flight. She wants to roll a ball down a ramp to the end of the desk then let it fall from the desk to the ground.She will get the take off points and landing points but wants to...