Question

What mass of ammonium chloride can be added to 100 g of water at 20 degrees C before the solution becomes saturated?

Answer 1

http://www.inchem.org/documents/icsc/icsc/eics1051.htm

Answer 2

look at your solubility table (grams/100gH2O vs temp for varous compounds)

Yours ought to be more readable than this
http://library.thinkquest.org/3659/reference/solubilitycurves.html?tqskip1=1

Answer 3

can you tell me what to write