What are the strongest acids and bases in chemstry

Can you reduce your impairment by drinking coffee or cold showers? true or false?

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)

Can anyone answer these questions? ? i need it before 1: 00pm today