2 Select the correct answer.
Suppose you carry out a titration involving 2.50 molar NaOH and an unknown concentration of HBr. To bring the reaction to its end point, you add 49.2 milliliters
of NaOH to 35.0 milliliters of HBr.
What is the concentration of the HBr solution?

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.

List four observations that indicate that a chemical reaction may be taking place

Which of the following words describe the reality that the universe looks the same from various perspective