Recent content by dumbadum

What I meant was that when we did the lab in class, when we shook the solution very vigorously, the solution turned blue and never turned back. If all O2 oxidized are then reduced, why did the reaction get stuck? One more question: I read on the internet that indigo carmine was oxidized twice...

I'm trying to finish a lab report on the Blue Bottle Demostration where glucose is added to a solution of NaOH. Then Indigo carmine is added so the solution would go from red to yellow to green (My teacher called it the stop light reaction :D) I need to figure out why does the process...

Find a set of solubility rules should help you with the ppt part. I think MnSO4 is insoluble. As a rule, anything with NO3 should be soluble. Things involving Cl- should be soluble, and things with Group I metals are usually soluble.

take the one you like during the school year

I'm serious doubting my choice of going into bio-medical science. The main problem is that I don't know what I can actually do with a degree like that, besides doctor, researcher or teacher. I mean, there's only going to be so many of those. What am I going to do if I don't like it?

We are trying to make ethanol by using corn meal, sugar , amalyse and water, added with yeast in our school. So far, we've tried 2 table spoons of each + water and all corn meal, no sugar, also all sugar, no corn meal. Right now, the 2 table spoons is winning, I think. I was wondering if...

Maybe you'll observe no visible reaction since both the reactants and products are very soluble. But it should be a simple double displacement reaction I think

The question asks to write the chemical equation representing the cathode. The electrolyte at the cathode is Na+, Cl-, O2 and H2O What I would do is: Na+ + Cl- + O2 + H2O --> NaClO2 + H2O But that's obviously wrong. Please show me how to go about it. Thanks!

G3P is not pyruvate After glucose is mobolized by adding phosphate groups and turned into fructosebisphosphate, it is cleaved into dihydroxyacetone phosphate and phosphoglyceraldehyde. Then dihydroxyacetone phosphate is also converted into phosphoglyceraldehyde. The two phosphoglyceraldehyde is...

Google is always your best friend :) Try wikipedia.org also From Wikipedia, article Aluminum Foil: Aluminum foil (Aluminium foil in Commonwealth English) is aluminum prepared in thin sheets (on the order of 0.02 mm in thickness). As a result of this, the foil is extremely pliable, and can be...

first equation gives you 2 HClO (hypochlorous acid) Found it on google

The question is: calculate the pH after 10.0 mL of 0.4 M NaOH is added to 20.0 mL of 0.5 M CH3COOH (Ka CH3COOH = 1.8 x 10^-5) I'm thinking that if I find the Kb of NaOH, then I can find how much of OH and H will be produced. I can then subtract the concentrations and find the pH or...

Cu(en)2 ?? I was wondering what the (en) stood for in [Cu(en)2(H2O)2]2+ I was surfing the web and noticed that it appeared in several articles. Thanks!

Does "the more oxygen your eyes have, the whiter your sclera becomes" (as claimed by certain contact lens manufactures)? If so, why? If not, then what actually affect the whiteness of the sclera? Thanks!

Thanks everyone! I've decided to apply to: Life sciences: biochemistry Life sciences: chemistry Life sciences: Bio-medical Science Mathematics and Business double degree at four different universities. Since the first year for all life science students is pretty much the same, I think I'm...