Will give brainliest!!
What percentage of a substance remains after 7 half-lives have passed?
2.5
1.25
0.78
0.39

Drive down any three characteristic of modern periodic table

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.

How many moles of gas are present if p=11 atm, v=12l, t=185k?