What are some examples of proton?

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.

Which statement best explains the relationship between an area is geography and the temperature of its surface water

Calculate the percent composition by mass of each element in al(oh)3. use at least three significant figures.