How do you determine how much alum can be dissolved in 10 ml of hot deionized water to make a saturated solution? ?

You need to monitor the solution to see when the crystals start gathering at the bottom of the solution. You can slowly add alum until it stops dissolving. The point just before it starts its sedimentation at the bottom is the point when the solution is saturated.

The answer is c. risk

I’m pretty sure it’s filtration