PLS HELP ILL GIBE BRAINLIEST TO WHO GETS IT RIGHT 2) How many grams of KMnO, are needed to make 500.0 mL of a 0.200 M solution?

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.

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false

Scientists often have to deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each number in an alternate form.