True or False: When water vapor in an air parcel cools, it can condense into liquid water, which can form into a cloud and fall as rain. Please Explain.

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)

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.

What does the mass of 0.7891 mol of ferric oxide (fe2o3)