Chlorine boils at 239 k. what is the boiling point of chlorine expressed in degrees celsius? a. 93°c b. 34°c c. –61°c d. –34°c

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?

Which of the following represents the ester functional group? a. -coo- b. -cho c. -cooh d. c=o