A is formed when one or more elements combine chemically. * element
compound
mixture
solution

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)

What must happen before a body cell can begin mitotic cell division

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?