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Water flouridation
It's always fascinating to see all this stuff about fluorides.
But they don't actually add fluoride ... |
5-6-2012 at 09:18
by: unionised |
Strange crystallization
[rquote=250629&tid=20333&author=Adas]Hello guys, I have something special for you now.
A ... |
5-6-2012 at 09:08
by: unionised |
Cream of tartar solubility
[rquote=250512&tid=20305&author=AJKOER]Could we use Sodium bicarbonate as a "salting-out" ag ... |
4-6-2012 at 08:36
by: unionised |
Cream of tartar solubility
[rquote=250368&tid=20305&author=blogfast25]AJ:
Unionised: food grade doesn’t imply pu ... |
4-6-2012 at 05:54
by: unionised |
Cream of tartar solubility
If it's already food grade, how much purer do you think you can get it? |
3-6-2012 at 10:21
by: unionised |
Maths question regarding grams and dissolving metals
If the density of the HCl solution is 1.18 then it's not 8M.
1 g of copper is about 1/63.5 moles
... |
3-6-2012 at 07:16
by: unionised |
Measuring hypochlorite concentration
Since the chlorine is reduced from a positive, to a negative, oxidation state there must be an inter ... |
3-6-2012 at 07:07
by: unionised |
Formic acid descaler available.
Same stuff, different brand was on sale years ago.
http://www.sciencemadness.org/talk/viewthread.ph ... |
30-5-2012 at 10:49
by: unionised |
Filtering
The traditional approach would be to use a filter aid like celite but that would probably add too ma ... |
28-5-2012 at 12:07
by: unionised |
Preparation of Neodymium Compound
I predict electrochemical reduction of DMSO to dimethyl sulphide. |
16-5-2012 at 09:58
by: unionised |
pH in IPA
Measuring pH isn't easy in non-aqueous solutions.
You would probably do better to calculate the n ... |
16-5-2012 at 09:55
by: unionised |
How toxic is potassium permanganate
It's not like manganses toxicity is obscure or something new.
http://en.wikipedia.org/wiki/Manganis ... |
15-5-2012 at 12:02
by: unionised |
calcium hydroxide from cement mixture
Portland cement is essentially a mixture of calcium silicates .
There isn't any hydroxide there. Th ... |
12-5-2012 at 05:58
by: unionised |
Creation of potassium carbonate
f you want potassium carbonate then drawing air through KOH solution will make it easily and cheapl ... |
10-5-2012 at 11:34
by: unionised |
Lab Stools and Seats
Way back in the depths of time when I was a student, sitting around in the lab was discouraged. As t ... |
25-4-2012 at 11:50
by: unionised |
silver from silver cloth?
A couple of points,
Firstly, the black stuff that forms on silver is definitely the sulphide not th ... |
25-4-2012 at 11:47
by: unionised |
calcium from milk?
If you roasted dried milk with phosphoric acid in air you would get impure calcium phosphate, but it ... |
20-4-2012 at 09:40
by: unionised |
CaCO3 mouth reaction
My guess is that it's the messed up bacteria attacking your mouth or saliva. |
17-4-2012 at 11:09
by: unionised |
Looking to buy a HPLC or HNMR. Ebay isn't working.
You might do better with a specialist vendor rather than ebay.
http://www.labx.com/v2/category_main ... |
17-4-2012 at 11:08
by: unionised |
The hydrolysis of methylene chloride (CH2Cl2). And methanol
And, for a bonus point, tell us what happens to the formaldehyde when exposed to a strong alkali. |
17-4-2012 at 11:05
by: unionised |
Dropped my stir bar down the sink
Emptying the trap isn't difficult, but this might be quicker
http://www.philipharris.co.uk/product/ ... |
16-4-2012 at 04:46
by: unionised |
CO2 in water
"Refer to 2320B in the Standard Methods:"
How?
You have already been told that at least one of us ... |
6-4-2012 at 03:33
by: unionised |
Dissolving chlorine gas in kerosene
http://www.oxforddiecast.co.uk/AK002%20Pink%20Paraffin.htm
In the UK, that petroleum fraction which ... |
29-3-2012 at 12:58
by: unionised |
Substances with near room temp phase change
I read of some (fairly) famous scientist who kept a bottle of diphenylmethane on his desk.
If it me ... |
28-3-2012 at 13:01
by: unionised |
Pipette Pumps
At work I use a pipette filler and swear about it: at home I pipette by mouth.
However I can't hone ... |
28-3-2012 at 12:52
by: unionised |
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