Acertain ore is 29.9% nickel by mass. how many kilograms of this ore would you need to dig up to have 75.0 g of nickel?

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.

Anyone who's in connections academy chemistry b have the factors that affect the rate of a reaction portfolio already done?

One similarity and one difference between an element and a mixture of elements