What is the chemical formula for the compound formed between rubidium and iodine?

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)

How does the attraction between particles affect the ability of a solvent to dissolve in a substance

Show how to convert the temperature 84.7° c to kelvin. include all steps and label the final answer