16) which of the following elements is unique to nucleic acids when studying organic compounds? -carbon -hydrogen -phosphorous -oxygen

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 data from seismic waves, geologists have learned that earth’s interior is made up of several

What physical property of gold makes panning a useful way to get gold from streams?