hypnotiq

Hi there, I was wondering if there is a quick and easy way to assign an R or S configuration to a chiral enantiomer instead of either setting the lowest priority molecule back into the plane, or having to physically build the model using a modelling kit. Also, is there any quick way to identify a meso compound? Thanks. PS Am I correct in saying that the top left compound is an R-entantiomer whereas it's mirror image is an S-enantiomer?

http://en.wikipedia.org/wiki/Calorimetry Google is your friend.

Yeah, no acetyly chloride either This prep has been shown to work, it's a lot of work, but yeah, it does work. Thanks for the heads up

I am doing a synthesis of aspirin, from salicylic acid and acetic anhydride, to form acetylsalicylic acid, and I was wondering if there was any way to substitute the Acetic Anhydride required in the reaction for something else, as I do not have any available to me. The reaction is as follows: C7H6O3 + C4H6O3 (Acetic Anhydride) --> C9H8O4 (Aspirin) + C2H4O2 (Acetic Acid)

*Cl* (**c Acid)

So I guess then, my question is what causes water at room temperature to have a vapor pressure equal to that of the atmosphere?

So, I was thinking water changes state from liquid to gas at 100 degrees Celsius and becomes water vapor. So how come a glass of water left at room temperature will eventually evaporate, even though it's not hot enough?