Recent content by Umabel

Thanks.

I was looking around to purchase some deuterated chloroform online. A few of the products offered include "stabalized with silver foil". What is the silver foil preventing the solvent from doing? FYI, this silver foil is probably inside the bottle. One more thing, is there reason why you want...

When looking it up, you should notice the main difference in the fractional distillation apparatus contains a column divided into plates (or something resembling plates) stacked one on top of another. A simple distillation apparatus doesn't have that kind of column, because as you have found...

It's going to depend on what is in the solution. Lots of strong bases (AlOH is one) are stored in silica glass. So at room temp, I'll ballpark that the rate is going to be very low.Perhaps nm/month? You could etch glass with HF...

You didn't got it wrong. There is some round off error, because you did it the "long" way. Try to look it over again and see if you can find an easier way. If you can't see it, let us know and we'll help out.

Never said it was. You're right Shravan, it's 298K and 1atm.

The molecule is polar, that should be the "bridge" between clustered electrons and excelent solvents. I can't blame you though. The question is worded all weird but the concept is nevertheless the same, so you are better off researching about this.

Good idea. I thought it was broad...just not THAT broad. Thanks a lot. :smile:

Does anyone know a good site that covers the Fourier series/transform and its uses?

Then what is the difference between H2O and H2S? I used the same analogy here, though I'm not surprised I'm wrong :shy:

H2S CAN act as a base, no? And so can NH2 right? I have mixed feelings about CH3...(nothing like silly questions to confuse your brain huh?) sorry to butt in, just had a BRUTAL :eek: adv organic test with all these basic/acid strength questions...:smile: Do what Goku says, but take it from...

You have the equation/answer right, but make sure that the reaction was carried out in standard conditions. That reaction could be carried out in 300K and 200kPa for all we know. It's probably right anways. If it's not the case we have a whole can of worms to open here. By the way, how do you...

And while we're at it, what properties would a jar of electrons have? :confused:

If I multiply the rest of the equation by let's say, 400nm, then the nm units cancel out... edit: though I have to admit that I am not totally convinced that this is what the unit implies. Is it some invisible reminder that the spectral radiance depends on what wavelength region this source...

I assume the source is monochromatic here, so the wavelength coming out of monochromator is also monochromatic...let's just say that the radiation is at 400nm or something...