A lightweight head on the driver of a golf club is made of titanium. The volume of a sample of titanium is 114 cm3 and the mass is 514.1 g

What is the percentage by mass of silicon (si) in iron aluminum silicate (fe3al2(sio4)3)?

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.

Can someone me with questions 12 and 13 plz.