In the ray diagram, a ray refracts at point O. If the line PQ separates two transparent media, which statement BEST describes it?

A) Ray AO is the incident ray, and OB is the normal.
B) Ray OB is the incident ray, and AO is the normal.
C) Ray AO is the incident ray, and OB is the refracted ray.
D) Ray OB is the incident ray, and AO is the refracted ray.

When svante arrhenius first proposed his acid-base theory, he was a doctoral candidate. his professors thought his ideas were unfounded. within a decade, the arrhenius theory of acid-base was widely accepted and praised within the scientific world. arrhenius defined acids as compounds having ionizable hydrogen and bases as compounds with ionizable a) barium. b) hydronium. c) hydroxide. d) oxygen.

|using the periodic tablewarm-upuse the periodic table in the tools bar to answer the following questions.what elemental classification does oxygen belongto? done

Using the first volume and temperature reading on the table as v1 and t1, solve for the unknown values in the table below. remember to use the rules of significant figures when entering your numeric response.