Salicylic acid, an impurity in the synthesis of aspirin, can be detected by using iron (III) chloride. When salicylic acid is added to a solution of iron (III) chloride , the solution turns a color.

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)

Using the periodic table, complete the table to describe each atom. type in your answers.a ? b? c? d? e? f?

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