What type of table did chancourtois create? why did he do it this way?

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 is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5

Classify this reaction: 2al+n2-> aln.