Polysaccharides always:a. are a string of 3 or more sugar molecules. b. contain lipids. c. are polymers. d. The first and second choices are correct. e. The first and third choices are correct.

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

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.