If you has a saturated solution of NH4Cl at 70 degrees, how many grams of crystals would appear if the solution was cooled to 50 degrees?

To answer this question, we need to know the solubility of NH4Cl at both 70 degrees and 50 degrees. The solubility of a substance is usually given in grams per 100 grams of water at a certain temperature.

Let's assume the solubility of NH4Cl is X grams at 70 degrees and Y grams at 50 degrees per 100 grams of water.

1. First, we need to find out how much NH4Cl is dissolved in the solution at 70 degrees. If the solution is saturated, it means it contains the maximum amount of NH4Cl that can be dissolved at this temperature. So, it contains X grams of NH4Cl per 100 grams of water.

2. Then, we need to find out how much NH4Cl can remain dissolved when the solution is cooled to 50 degrees. At this temperature, the solution can hold only Y grams of NH4Cl per 100 grams of water.

3. The difference between X and Y will give us the amount of NH4Cl that will crystallize out when the solution is cooled from 70 degrees to 50 degrees.

So, without the specific solubility data of NH4Cl at these temperatures, we can't provide a numerical answer to this question.