An unknown substance was put in a container. The substance filed up the container from bottom up, taking half of the space in the container What is most likely the state of matter of the substance? (5 points)
O Gas
Liquid
Plasma
O Solid

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)

Balance this equation co2(g) + h2o (g) show that the balanced equation obeys the law if conversation of mass

How many grams of aluminum will there be in 98g of al2o3?