What unit is used to measure weighted average atomic mass?
a. amu
b. gram
c. angstrom
d. nanogram

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)

Write a net ionic equation to show that hydrofluoric acid, behaves as an acid in water.

Idon’t know how to solve this question