Chemistry Forum

Hello. I am having trouble with a question in my textbook. If I have an 8.3 g sample of acetanilide (Solubility => 0.53g/100mL at 25oC and 5.0g/100 mL at 100oC) that needs to be purified by recrystallization, then what is the maximum % yield that can be recovered (10% excess of solvent was used)? I'...

expert wrote:Divide it by molecular weight of NaBH4

But isn't that just moles of NaBH4? In my lab, we have to state the weight in grams, moles of substance and molar equivalent (eq)... so they consider it as different from moles.

If I have 0.5 g of sodium borohydride, how do I figure out the molar equivalent of this?

Hello, everyone! I am analyzing the molecule ethyl acrylate http://www.winsornewton.com/assets/Resource%20Centre/Articles/Acrylics%20science/ethyl_acrylate_jpeg.jpg right now and having a little trouble because I've, unfourtunately, fallen behind in my organic chemistry course at the moment. What is...