1. On paper, solve the following two problems. You must show all the required work.
a. An 85.00 g sample of tetraethyllead, a gasoline additive, is found to contain 54.44 g lead, 25.26 g
carbon, and 5.30g hydrogen. Find its empirical formula.
b. Determine the molecular formula of a compound with an empirical formula of NH2 and a formula
mass of 32.06 u

What are the spectator ions in 2h+ + so42- + ca2+ + 2r → caso4 + 2h+ + 21?

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.

Which piece of equipment would me most useful for measuring the volume of some water? a. pan balance b. graduated cylinder c. tweezers d. flask quick