How many grams of ammonium sulfate are needed to make a 0.25 M solution at a concentration of 6 M? I don't even know where to start this problem. Explanation PLEASE!! Award for best answer!! THANKS!!

Question

anonymous · Answer

@whpalmer4 
@thomaster 
@Luigi0210

anonymous · Answer

I really get chemistry but this question makes no sense to me!!!

anonymous · Answer

Well. I think we need more information.

anonymous · Answer

That is literally exactly what the question says and that is why I am so confused!!

anonymous · Answer

Molarity is moles/liters of solvent. Without knowing either the amount of solute or the amount of solvent, we can't really do much. ._. If we had one of the other values we could do figure it out.

anonymous · Answer

I know exactly what you are saying I found the answer online and it is 171.2 grams but I am not interested in the answer I am interested in understanding that's why I am so frustrated!! Hopefully you knowing the answer will help somewhat :)

anonymous · Answer

@ganeshie8

anonymous · Answer

That makes no sense. 1 mole of  (NH4)SO4 is 132.1 grams.
171.2/132.1 is about 1.3 moles. Grrr.

whpalmer4 · Answer

Yeah, the problem was corrupted in transit. Look here and you'll see a version of it which makes much more sense! http://chemistryatsouthcarletonhs.wikispaces.com/file/view/Molarity+Practice+Problem1.doc