Look at the image, read, and choose the right answer. (1 point) Female and male lions, arrow pointing to female La leona « female lion/lioness » es grande y . pequeña alto bonita bonito

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)

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder

What is the mass of 0.750 mole of aluminum oxide, al2o3?