A 20.0 mL solution of NaOH is neutralized with 38.4 mL of 0.200 M HBR. What is the concentration of the original NaOH solution?

How many moles of potassium are needed to react completely with 12.8 moles of magnessium bromide?

If you are told to get 100 ml of stock solution to use to prepare smaller size sample for an experiment, which piece of glassware would you use?

Select all that apply. when the products of a reaction have less energy than the reactants: the reaction is exothermic. the reaction is endothermic. the reactants lost internal energy. the change in enthalpy is positive.