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Chemistry

  1. Hey, I read ahead a little bit in my chemistry book and came across the table of standard reduction potentials. Is it possible to increase the reduction potential of, say, a metal by stimulating it with an electric current? Because if what I know of electric currents is true (they're net movements of electrons), then shouldn't the electrons in the current have enough energy to jump from the metal and reduce other things that normally would not accept an electron?

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  2. Started by jumbodrawn,

    Hi guys! I was recently thinking that it would be cool to fly over Chernobyl with an rc airplane. Assuming we fly over the restricted areas for around 45 ish minutes and be fairly close to the ground, and the airplane is made of foam board, would any radiation stick to the airplane? The airplane is hollow on the inside, but the outside can be cleaned with water. Would I have to worry about radiation poisoning?

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  3. Started by Heavens Response,

    How would someone manufacturer a light emitting electrochemical polymer liquid/gel that is powered by low voltage? Materials? Expense? Manufacturing process? Possible dangers of chemical composition?

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  4. Hi, so I know how to balance chemical equations, (instead of H2O it's 2H2O) But what exactly differs a reaction equation from abalancing equation?

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  5. I was thinking about designing molecular descriptors for the virtual screening purpose: such that two molecules have similar shape if and only if their descriptors are similar. They could be used separately, or to complement e.g. some pharmacophore descriptors. They should be optimized for ligands - which are usually elongated and flat. Hence I thought to use the following approach: - normalize rotation (using principal component analysis), - describe bending - usually one coefficient is sufficient, - describe evolution of cross-section, for example as evolving ellipse Finally, the shape below is described by 8 real coefficients: length (1), bending (1) and 6 for evolut…

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  6. Started by Leejun100,

    I have graduated recently with Bachelor of Pharmacy in overseas and I am interested to study chemistry in USA. I do not know what PhD chemistry program (except medicinal chemistry) I can apply. Hence, I would like to get some advices.

  7. Or is it the chemicals that are in it? So is pure H2O toxic? Is it the chemicals in bottled and tap water?

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  8. Started by smhjn17,

    When i left the milk to spoil for a day, there was a floating protein mass and a sedimented protein mass ....can i get the explanation why some protein coagulum floats on the surface? Is it because of the gases produced by the bacteria that it moved to the top???

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  9. Started by silverghoul1,

    What exactly are the rules when forging metals togather as liquids, and then to cool down into a soild? Will the less dense metal raise to the top. Could it be possible to mix metals like titanium and aluminum.

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  10. Started by Externet,

    For the first time am moving to a house with gas service. Am afraid of it. All pipes have been checked for leaks by a professional. Still afraid, am installing a gas detector alarm. Where is it better to install; near the ceiling or near the floor ? I believe it is natural gas; whatever that be... methane, propane, butane, hexane...

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  11. Started by smhjn17,

    We have benedict n fehling as the default tests for sugars in most chemical analysis....however these tests are actually detecting only the aldehyde group in the sugars.... Technically we are just detecting aldehyde n not a sugar Isnt there any other more specific testing procedure for sugars ??? What about caramelization test in addition to aldehydic group test??

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  12. Started by Chad Gold,

    Dont know what the experiment you see is? Post photos and let the community help you!

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  13. Started by Ant Sinclair,

    I posted the same thread earlier in inorganic chemistry and then thought probably this forum would fit it better. Maybe a moderator could delete the other thread? Is it correct that OH + H2O > H2O + OH with the exchange of an ion? If it is correct, is it known today, which ion swaps? If water and hydroxide masers(seen in the early stages of star-formation), with high densities and fast velocities(60km/s +) are 'swirling' around each other, could they be exchanging ions, and would it be correct to think it would be a considerable amount of energy in this ion exchange, if it is happening?

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  14. Started by Rexspidy,

    1.Principle of structure and reactivity by Huheey,keiter & keiter 2.Inorganic Chemistry by shriver and Atkins Not paid please,If have give link to download

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  15. Started by rasiel,

    Hey guys, I wanted to show off a handmade prototype that took a long (long!) time to put together. It would house a collection of elements. We're thinking of selling these if there's enough interest. The 'cells' are big enough to hold a 2x2 cube as elements sometimes come embedded in this size. They'd be pretty expensive mostly because there's a lot of labor involved in putting them together. Each one starts out as two acrylic sheets. A CNC router then cuts out the holes in one panel and then a third panel which is cut up into sized squares that are then individually glued in position. When the whole grid is in place then the two panels are sandwiched and glued on....…

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  16. Started by Rexspidy,

    I want to details of Atomic structure ,perodic tables,Orbital diagram,Hybridization,Chemical bonding etc . I need to clear the basic of chemistry .So help me out giving any possible video links,Sites or tutorial guide .Thanks

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  17. Started by ahsan8244,

    Hello all I have been studying about lattices recently and have come across the law that each ion is surrounded by 6 oppositely charged ions. However, if we consider the topmost unit cell of a lattice in a solid, how can the top corner ions be surrounded by 6 oppositely charged ions when there would be no unit cell above it? awaiting answers, thankyou

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  18. Started by aoa,

    Dear All, i would like to shipping by a cargo a natural cherry red mercury one gram . did i will have a problem on scanner machine at airport ? because at the cargo company when they put on a scanner machine that is showing a green light its meaning is OK , but when put it on electronic kg weight machine to check the weight, the numbers is going and coming In the display screen. i get some confusion Looking for insulation material inside the case . pls, who can advise me ? thanks best regard anna

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  19. Started by smhjn17,

    Does heating have any effect on proline ?

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  20. Dear All we have source of Tin alloy. in that 97% of Tin and in 3% of silver impurity which we would like to remove kindly advice the proceduer for the same Regards Yatendra Joshi

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  21. Started by DrDoggy,

    Just started reading about these, seems there has been recent activity from a company called Bloom , who is able to host a fuel cell that costs $8000 per kw, Another company has made claim that they are able to do 1000$ per kw, but according to the review nothing has come out of production yet. http://www.technologyreview.com/news/518516/an-inexpensive-fuel-cell-generator/ .....also they do not answer their phone, not what i look for in my first choice. I am looking for something in the 10kw range and will be feeding it natural gas. So , i wonder , is it possible to get a fuel cell for myself, without being a corporation? and what type of cell do i need? , any s…

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  22. Started by kjslugger,

    Hi, I have been trying to write up a new procedure for chemistry lab and need some help. I am looking for some chemical reactions that students can do that show evidence of a color change or a temperature change (hot or cold) or gas evolution or a precipitate that has color (preferably not white). I can not use mercury, lead, chromates. I have mostly nitrates, chlorides and some sulfates to work with. I have already done experiments with Mg and HCl for H2 creation. Copper and Silver Nitrate - too expensive! Calcium chloride and sodium carbonate for precip. Magnesium burning. Copper Carbonate decomposition for CO2. I don't really have any good experiments for c…

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  23. Started by Elite Engineer,

    I regularly melt down aluminum cans into ingots to make fun little designs and what not. Is it safe to handle aluminum ingots or is there any risk of aluminum toxicity, like Tin or lead toxicity? -Any high risk of the chemical from melting down aluminum cans? ~EE

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  24. Started by joezavala,

    Hey guys, I was wondering, in theoratical terms, if lets say an anti-hydrogen partile would react with the hydrogen atoms in an h2o molecule, revealing the oxygen atoms as the outcome? Thanks.

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  25. Does someone know about a chemical procedure to differentiate these phases? If not chemical, do you have another?

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