Consider the following descriptions of an element on the periodic table. Determine which element is being described and write its Chemical Symbol (case sensitive) in the blank.
Period 3, Group 13
Period 4, Group 2
Period 2, Group 5A
Period 1, Group 1A

What volume of a 2.00 m stock solution of naoh is needed to prepare 150. ml of 0.40 m solution?

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

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.