Search found 15 matches
- Thu Mar 23, 2017 3:52 am
- Forum: Chemistry forum
- Topic: Help : Chlorine Tablet to Powder to Tab again ! Possible ?
- Replies: 1
- Views: 3866
- Thu Feb 09, 2017 4:07 am
- Forum: Chemistry forum
- Topic: We need ideas!
- Replies: 2
- Views: 11370
Hello! Pls, have a look at www.cas.org 127 million of various chemicals listed in there, along with some tools. As far as building useful website for chemists concerned, having no Artificial Intelligence at hand you will be limited to the basic tools: unit converters, simple equations etc. So, you w...
- Thu Oct 06, 2016 1:55 am
- Forum: Chemistry forum
- Topic: Сan a crushed hackmanite be added to cosmetics?
- Replies: 2
- Views: 3979
- Wed May 18, 2016 4:45 am
- Forum: Chemistry forum
- Topic: Calculate Mass
- Replies: 1
- Views: 6008
Fe2O3 + Mg3(PO4)2 = 2Fe(PO4) + 3MgO 1 mol of Fe2O3 reacts with 1 mol of Mg(PO4)2. Mg3(PO4)2 - 262.86 g/mol 1.64 x 10^12g of Mg3(PO4)2 equals to 6.24 x 10^9 moles, same amount of moles of Fe2O3 needed - 6.24 x 10^9. Fe2O3 molar mass is 159.69 g/mol, so 6.24 x 10^9 moles of Fe2O3 weight 9.96 x 10^11 g.
- Tue May 17, 2016 12:20 pm
- Forum: Chemistry forum
- Topic: pH of a diluted with distilled water
- Replies: 4
- Views: 5516
pH, diluted acids
"...what do we do..." I guess, first we to thank people for helping us: "благодарÑ!" )) Second, CH3COOH is a weak acid, therefore you, pls look for "acid ionization constant Ka" (should be provided). Third, H2SO4 - even "worse" )), as it dissociates in...
- Mon May 16, 2016 4:16 am
- Forum: Chemistry forum
- Topic: pH of a diluted with distilled water
- Replies: 4
- Views: 5516
- Fri May 06, 2016 8:00 am
- Forum: Chemistry forum
- Topic: Chenmitry
- Replies: 2
- Views: 4192
- Fri Apr 22, 2016 5:02 am
- Forum: Chemistry forum
- Topic: Why cant this chemical equation be balanced?
- Replies: 2
- Views: 3634
- Mon Mar 28, 2016 7:35 am
- Forum: Chemistry forum
- Topic: Please help me to solve this chemistry problem
- Replies: 2
- Views: 5948
I guess, one very important condition is missing here - the mass of Zn. If you have got Zn in quantity lesser than 65.38 grams (1 mole of Zn), any amount of HCl can't help you to produce needed quantity of H. If you have exactly 65.38 grams of Zn, then ANY amount of HCl, equal or exceeding 36.45 x 2...
- Wed Mar 16, 2016 7:54 am
- Forum: Chemistry forum
- Topic: need the magazine scientific American
- Replies: 1
- Views: 4096
- Wed Mar 16, 2016 7:30 am
- Forum: Chemistry forum
- Topic: Ph tester for solids
- Replies: 1
- Views: 3796
- Fri Dec 25, 2015 2:35 am
- Forum: Chemistry forum
- Topic: Most durable materials?
- Replies: 2
- Views: 4314
Yeah, to wear a wristwatch you need a watch wrist.
Durable wrist makes durable fist.
T-1000 is difficult to find yet, try hyper alloy from T-800 http://terminator.wikia.com/wiki/T-800.
For the wristwatch body I would go for ceramic. Not toxic.
Durable wrist makes durable fist.
T-1000 is difficult to find yet, try hyper alloy from T-800 http://terminator.wikia.com/wiki/T-800.
For the wristwatch body I would go for ceramic. Not toxic.
- Tue Oct 20, 2015 7:01 am
- Forum: Chemistry forum
- Topic: ice in water question - how much does water cool here?
- Replies: 1
- Views: 4066
- Tue Sep 08, 2015 2:18 am
- Forum: Chemistry forum
- Topic: How to make organic, epoxy-like stuff?
- Replies: 1
- Views: 4758
sweet installation
Hi!
Heat sugar to melt. "Fry" it to desirable color, pour into a mould.
Mould surface to be oiled beforehand.
Heat sugar to melt. "Fry" it to desirable color, pour into a mould.
Mould surface to be oiled beforehand.
- Mon Aug 31, 2015 6:11 am
- Forum: Chemistry forum
- Topic: Edible chemicals question or challenge so to speak..
- Replies: 1
- Views: 4106
dangerous packing material
Packing material to change from solid to gas without becoming liquid and without leaving any residues not to contaminate the food? 1. Oxidation by oxygen. In a way, you are talking about flammable or even explosive material. It's difficult to imagine how to store and transport such packing material,...