Australia's Science Forum

Good Morning Everyone, what a way to start the day.....Hot Water Service leaked over the weekend...pools of water in three rooms. Now this.... I have prepared ore with Copper Sulphate....my question is .... what acid should we use? We use Sulphuric when using Copper Carbonate. Haven't got enough Cop...

Good Morning All
A question for those of you who use RiskAssess.
Do you know if the hand generator, also known as dynamo can be written into the equipment section? Does it have another name?
Thanks in advance
Rita

Hi All

We did the iodine and starch solution for this prac without measuring side of things. The teacher also asked for sucrose and glucose both 1M. Has anyone used these as well for diffusion prac? Seems a strong concentration....1M sucrose is 34.23%.
Thanks for your thoughts.
Rita

Good Morning,

For those of you who use iodine and starch, what strength iodine do you use please? 0.1M?

Thanks in Anticipation,
Rita

Bromine comes in a plastic bottle named Bromine liquid 1ml. Does anyone use this and if you do what needs to be done in readiness for class?
Any help appreciated.
Many thanks in advance
Rita

If the sources are stored correctly in the lead.... where do you store the lead storage case? Does it need to be kept in a special area?

Thanks
Rita

Hi All We used the potassium permanganate crystals with straws/forceps for observing convection currents. In recent times the new containers of potassium permanganate (Chem Supply) contain very fine crystals and it is impossible to pick them up like we used too. Does anyone know where I could find c...

Thanks bigmack you explained what I didn't know.

Teacher was talking about 5% for sucrose and glucose solutions. Can they be lower also?

Hi All,
A prac order asks for starch solution (fairly dilute). Can anyone help me with how 'fairly dilute' is 'fairly dilute in reducing sugars prac'? 0.5%? more? less?
Thanks in advance,
Rita

A recipe I have is 100mls hydrogen Peroxide and 20-25mls 2M sodium Iodide. I was wondering if 2M potassium Iodide could be substituted. By what is written above I assume it wouldn't matter the concentration used.

Thank you Merilyn

Hi All
Phillip Crisp mentioned at a training day, a "P2" kitty litter should be used instead of just any old kitty litter. Can anyone tell me the name of a brand and/or which shops stock it please?
Thanks in advance
Rita

Narelle,
Who supplies the disposable innoculation loops, please?

Hi All

Has anyone noticed the price of minigrids lately? They seem to have jumped quite a bit. We had a student break three and need to replace them.

Thank You

Hello All' I do not know the Oakhill College area other than looking at a map. There is no train station close by and accommodation is in opposite direction to closest stations. If we drive up from regional areas could someone tell us where available parking is at or near the college please? Thanks ...

Ten litres minimum purchase about $110.00 incl. GST now. Your price sounds better than ours. Where was your quote from?

We use ten litres...... senior physics pracs and leftovers go to junior classes demonstrations.

Rita

Hi All

I have just been asked to buy some Sodium (to replace 11yr old bottle), Potassium and Lithium.

Does anybody still use these or is other metals preferable?

Appreciate your thoughts
Rita

I am in Nowra and I use Premier Genetics and Livestock Solutions ph 44227247. Another local school uses them also. It is delivered in a Dewar. The company have a supply run that goes up and down the coast (mainly rural areas), and a run up to the southern highlands. Ice-creammade with liquid nitroge...