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Identifying Unknown Compounds in a Lab
If you leave a sample of solid ferrous sulfate out, it becomes brown-colored in a while (hours/minut ... |
2-6-2012 at 03:39
by: barley81 |
Measuring hypochlorite concentration
In "Illustrated Guide to Home Chemistry Experiments" by Robert Bruce Thompson, titration of bleach i ... |
2-6-2012 at 03:33
by: barley81 |
Identifying Unknown Compounds in a Lab
Iron II is oxidized fairly rapidly in distilled water (neutral solution) and dissolved oxygen can ce ... |
1-6-2012 at 18:52
by: barley81 |
Identifying Unknown Compounds in a Lab
You cannot measure the density that way. First, the solid may have floated due to surface tension. S ... |
1-6-2012 at 16:34
by: barley81 |
Ebay supplier - legit or not?
I bought 50g Se and 100g Te for a total of $42 shipped to the USA. I'm really pleased with the good ... |
1-6-2012 at 14:05
by: barley81 |
Bromine from NaBr
Elemental scientific has some. You could look for a neon sign shop or a glassblower in your area. Th ... |
31-5-2012 at 07:58
by: barley81 |
how can i dissolved amino acid
I think he needs an aprotic solvent. In that case, acetone might work. I saw online that glycine is ... |
30-5-2012 at 12:44
by: barley81 |
Interesting Plug Hole unblocker.
Aluminum is easily purchased as foil and is very cheap. Sodium hydroxide mixed with aluminum and NaN ... |
30-5-2012 at 12:24
by: barley81 |
horde of gear uncovered in Toronto
The jar of KI makes me burn with envy... Just kidding. I really wish it were cheaper to buy though.
... |
30-5-2012 at 11:46
by: barley81 |
Gas discharge tubes.
I couldn't watch the video because I was at school. When I get home, I'll take a look.
It would b ... |
30-5-2012 at 09:02
by: barley81 |
Gas discharge tubes.
It actually does work with sulfur. Sulfur in an evacuated tube is excited by microwaves. There is a ... |
30-5-2012 at 07:40
by: barley81 |
SnI4: A nice covalent compound of tin
Today I tried to use naphtha as a solvent for making SnI4. I put some tin that had been melted and s ... |
27-5-2012 at 18:19
by: barley81 |
Can anyone help me out?
Heating copper sulfate alone will get you sulfur dioxide, oxygen, and copper oxide. You won't get co ... |
27-5-2012 at 08:43
by: barley81 |
Naphtalene odor
Leave it outside in the sun?? Water-soluble stuff probably won't work since naphthalene is insoluble ... |
27-5-2012 at 05:48
by: barley81 |
Favorite Non-metals (non-noble gases) Poll
From the summary of this paper:
http://onlinelibrary.wiley.com/doi/10.1002/1521-3765%2820011105%297 ... |
26-5-2012 at 14:50
by: barley81 |
Analyzing Arsenic
Huh. I didn't know that. I found the procedure for the test in "Illustrated Guide to Home Chemistry ... |
26-5-2012 at 14:43
by: barley81 |
Analyzing Arsenic
The sample is placed in a gas generator containing HCl, and some zinc is added. The nozzle of the ga ... |
26-5-2012 at 14:01
by: barley81 |
Isopropylamine and Diisopropylamine from Acetone
Formic acid can be bought for $12 a liter from Dudadiesel. React with standardized ammonia, and you' ... |
26-5-2012 at 06:34
by: barley81 |
Filtering
For some purposes it is more than adequate, but silver bars are usually 99.9+% in purity. If the sil ... |
26-5-2012 at 06:26
by: barley81 |
Filtering
If you use copper wire, then frequently copper adheres to the silver crystals and you don't get pure ... |
25-5-2012 at 17:40
by: barley81 |
Filtering
What kind of impurities? Soluble ones like copper will not be stopped by filtration. You can remove ... |
25-5-2012 at 03:49
by: barley81 |
Ebay supplier - legit or not?
He is offering 100g of pure Te for 12 GBP right now. Would you recommend purchasing selenium (powder ... |
24-5-2012 at 11:47
by: barley81 |
Ebay supplier - legit or not?
Oh, sorry. In that case, the prices are extremely low! Sorry for starting an unnecessary thread, but ... |
23-5-2012 at 12:28
by: barley81 |
Ebay supplier - legit or not?
Hmm... Doesn't this eBay store look fishy? 100g Se for 16 pounds? It's very hard to believe.
http ... |
23-5-2012 at 11:48
by: barley81 |
Old process for synthetising chemicals
Apparently distillation of ants was used to make formic acid back in the day. Here is the thread on ... |
23-5-2012 at 11:46
by: barley81 |
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