In the gizmo, solid ice is gray, liquid water is blue, and water vapor gas is light blue. heat or chill the water as needed. what phase is the water in at -20 °c?



(copy and paste this url and it will take you to the cite. if you don't have an account then sign up and after that the phases of water gizmo should pop up.)

question 1 options:

a.) solid

b.) liquid

c.) gas

Water ionizes by the equation h2o(l)⇌h+(aq)+oh−(aq) the extent of the reaction is small in pure water and dilute aqueous solutions. this reaction creates the following relationship between [h+] and [oh−]: kw=[h+][oh−] keep in mind that, like all equilibrium constants, the value of kw changes with temperature.

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)

Nonpoint source pollution is difficult to control because it