Jump to content

mississippichem

Resident Experts
  • Joined

  • Last visited

Posts posted by mississippichem

  1. There was once a physics seminar so incredible that all the women in the audience immediately stood up and threw their [math] \langle x | [/math] 's at the stage. The lone chemist in the audience would've no doubt been impressed, but unfortunately he was passed out from overexposure to the [math] | \mathrm{RNH_{2}} \rangle [/math] he had been working with in his lab.

     

     

    For those of you who have lives:

     

    Bra-ket notation

     

    Amine

  2. ·

    Edited by mississippichem

    hypervalent_iodine already addressed this but I thought I would say it again in a different way to further get the point across:

     

    We already know how to make the illicit substances you might be trying to make! Trying to disguise your project as something else will not get past us. We had a poster not too long ago who was clearly to trying to gain the necessary knowledge to synthesis crystal methamphetamine [a stimulant that is illegal in the US, most of Europe, and many other places]. Before that post could receive any helpful response, myself and the other other regular chemistry "instructors" around here jumped on it.

     

    All this to say. Don't even try if your intentions are dubious, illicit, or shady. You can't fool us.

     

    Feel free to ask for legitimate help any time though, just be on the up and up about it. Science can be a dangerous hobby. :P

  3. Two ways to go to jail:

     

    Next time you are pulled over by a policeman for speeding do one of the following:

     

    1) Argue that his velocity measurement was made from a non-inertial reference frame.

     

    2) Argue that the product of the position and momentum uncertainties he's claiming is less than [math] \hbar [/math] and therefore in violation of Heisenberg.

  4. and anyway, there must be some type of way of extracting sodium from compounds, or how would we get hold of any of it?

     

    oh wait, couldn't you reduce sodium compound with carbon monoxide?

     

    CO isn't a strong enough reducing agent. [math] E^o [/math] for the reaction [ce] Na^{+} + e^{-} -> Na^{0} [/ce] is about -2.71 V relative to the standard hydrogen electrode. One would need a really strong reducing agent as the Na metal that would form will be very reducing itself.

  5. Could you not electrolysise molten sodium chloride? i know it would be a hugely high temperature, but could you not theoretically do it?

     

    Yes. It is in fact the preferred method of mass scale sodium production. They use doping agents to lower the melting temperature though. However, I doubt that anyone does this at the lab scale, liquid sodium chloride is some really nasty stuff.

  6. A society led by royalty does not vote its rulers in or out, and so, it may accept the shortcomings of its rulers (and thus, of society in general) compared to a democratic society. And historically, the British seem to make life more accessible/livable for the disabled.

     

    True, Americans are very unforgiving of politicians and any little quirk a politician has is sure to hurt him somehow. For example during the Bush years it became a common joke to poke fun at George's pronunciation of the word "nuclear". Bush would say "nookyoolar" will most here in the states say "nooklear". Not a huge difference but entertaining to American audiences [ruthless mob].

  7. I have friend who studies abroad in China. He said Chinese parents push their children very hard in school because they all eventually have to take a standardized test that's name basically translates to the "tall test". The "tall test" determines if a child will be eligible for college, a trade program, or nothing at all. A child gets to take the test once and only once, so there is a lot of pressure. All this to say that Chinese culture is a culture of achievement and there is not much room for error or second chances. So Chinese children are highly motivated to be "smart". I don't know about that data though; seems a bit fishy to me.

  8. hi. I need a periodic table which contains the elements, the electronegative,Atom Radius, ion energy and rate of reaction & e.t.c , but I don't need they're numbers, I want it to show how these properties change in the table (for ex. the Radius increases in a group from top to bottom.)

    Thank U;)

     

    Find a good college level general chemistry textbook. A good textbook will cover pretty much all the periodic trends that matter. I think you'll be hard pressed to find a periodic table with rate of reaction though, that would be different for every element and every other reactant. So that periodic table would have to be at least one hundred feet across if not thousands.

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.