Which statement compares the relative strength of the electric forces that hold particles together

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)

Esign techniques and materials that reduce the negative environmental impact of a structure are referred to as

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0