A student takes a sample of KOH solution and dilutes it to a total of 487.59 mL. If the diluted solution is 1.51 M KOH and its original concentration was 2.53 M, what was the volume of the original sample?

Which best describes how johannes kepler developed his laws of planetary motion

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.

16. in a reaction that has reached equilibrium, a. the forward and reverse reactions are occurring at the same rate. b. the reactants and products are in equal concentrations. c. the forward reaction has gone further than the reverse reaction. d. there are equal numbers of atoms on both sides of the equation. e. a, b, and d are correct.