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mskittykat

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About mskittykat

  • Birthday February 10

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  • College Major/Degree
    Bachelor in Molecular Biology
  • Favorite Area of Science
    Biology/Chemistry
  • Biography
    Amazing!
  • Occupation
    Teaching Lab Tech

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  1. I think it would create Magnesium flakes under heat. When Mg was first discovered, it was reacted with K vapors to produce pure Mg. But considering the heat, it will probably form MgO (magnesium is highly reactive w/ O2)...but I'm not sure, haven't tried this experiment. Have you considered heating under vacuum, is that even a possibility does anyone know?
  2. Haven't seen anything half as impressive as the stuff on this list...don't know if I should be happy or not Just the usual suspects: Conc HCl, H2SO4, conc NaOH, ether
  3. Well, you could use chips if you're boiling and the solution is bubbling crazy after you have the stir bar in. The stir bar should be enough though, since it is mixing the solution and distributing the heat evenly.
  4. To answer your Q, HDPE bottles discolor and weaken, it is advised you not use them for too long, I used some for ~4 months, they're hanging in there but I will change them out. The best options in terms of plastic bottles are ETFE, FEP, TFA, PFA. I like glass OK but poly bottles are now made to be drip resistant which is a high bonus for me. If you're handling H2SO4, you don't want even a drop on your gloves, to be cautious. If you are about to buy, go for the better quality since you don't have to worry about it for a while at least. (Try VWR)
  5. 38% HCl is about 12M. That's standard concentrated acid that is commercially available. if you want 10% of this HCl, usually it's just 100mL HCl and 900mL DI water... This gets you down to about 1 L of 1.2 M HCl. The formula used is C1V1 = C2V2. C1= concentration initial V1 = how much of initial used C2 = concentration final (what you want to end up with) V2 = Volume you want to end up with Remember, C and V has to be in the same units on both sides
  6. These are both salts...I don't think they will react easily... You can get MgCl2 Mg(OH)2 + HCl > MgCl2 + H2O Why do you want magnesium chloride?
  7. You probably just like the food... But if it bothers you so bad, take out and test the sample for tox
  8. To answer your questions, you don't consider the extra water molecules for the copper pentahydrate. The chemical comes as is, you add 17.3 g. I'm about to make this, so here is my instructions: Weigh out 100g sodium carbonate, 173g sodium citrate, 17.3g copper sulfate pentahydrate. Fill up a flask/beaker with ~800mL distilled water. Dump the powders in there and stir until dissolved Take your solution and pour into a grad cylinder and top with DI water until 1L You don't have to be precise with the water, depends what you're doing with the solution. To answer other people's questions, you can buy these chemicals at Sigma Aldrich or Alfa Aesar (cheapest place I've seen), I don't know though if they just sell to residential areas, depends on the restrictions in your area.
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