When you exposed the precipitate, silver chloride to light, was this result a physical or chemical change?

It is a chemical change since the silver is chemically turning into silver sulfide. Chemical changes must involve a reaction. A hint that this is a chemical reaction is that there is a color change involved (from silver to black), and the tarnish can be removed without removing the unreacted silver.

the answer is either b or c

the correct answer is option d

explanation:

i was wrong its d because they dont use cm when calculating square roots