A saturated solution of NH4Cl was made using 500g of water at 90 degrees. the solution was cooled to 50 degrees. what mass of NH4Cl was crystallized

1 answer

hint:
According to
https://en.wikipedia.org/wiki/Solubility_table
The solubility of ammonium chloride is 51.4 and 71.2 at temperatures 50°C and 90°C respectively.
"Solubility" used in the above article is expressed in "grams per 100 milliliters of water (g/100 ml)"