Looking at the reaction below, if you started with 5.23 g of HCl and had an unlimited supply of Al, how many grams of AlCl3 should you produce?
2AI + 6HCl → 2AlCl3 + 3H2

Asample of silver (with work function ? = 4.52 ev) is exposed to an ultraviolet light source (? = 200 nm), which results in the ejection of photoelectrons. what changes will be observed if: silver is replaced with copper (? = 5.10 ev) more photoelectrons ejected no photoelectrons are emitted fewer photoelectrons ejected more energetic photoelectrons (on average) less energetic photoelectrons (on average)

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

What happens to isotopes that are unstable?