Which mix will be homogeneous?

a.
mixing salt and sand

b.
mixing food coloring and water

c.
mixing water and vegetable oil

d.
mixing carbon dioxide and water

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.

Anthracite is so hard and pure it is also referred to as a renewable resource metamorphic rock hot bituminous coal dirty fuel

How many grams of mgbr2 are needed to produce 75g or metal?