Because electrons move freely in metals, metals

Acycloalkane molecule contains 8 carbon atoms. how many hydrogen atoms are present in the molecule?

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 drawing shows a human body system. what is the primary function of this body system?