Bài 1. Hoàn thành phương trình ion sau và viết phương trình phân tử của các phản ứng có phương trình ion rút gọn sau: a. HS- → H2S b. Pb2+ → PbS c. H+ → H2O.
d. HCO3- → CO32-. e. 2H+ → Cu2+. f. Al(OH)3 → AlO2-.

Which is true of the reactants in this displacement reaction? fe + 2hcl fecl2 + h2 a. the reactants are located to the left of the arrow in the chemical equation. b. the reactants contain 1 iron atom, 2 hydrogen atoms, and 1 chlorine atom. c. the reactants are the atoms, molecules, or compounds formed in the reaction. d. the reactants have the same physical and chemical properties as the products.

In the millikan oil drop experiment they determined that every drop had a charge which was a while number multiple of -1.60x10^-19. if a drop has a total charge of -9.60x10^-19 then how many excess electrons are contained within the drop?

What is the value of keq for the reaction expressed in scientific notation?