A. Calculate the volume of 50% w/w NaOH (density 1.515 g/mL) required to prepare 0.5 L of 0.1 M NaOH. You should report this value to 2 digits. B. Calculate the mass of KHP needed to react with 29 mL of 0.1 M NaOH. Remember to show stoichiometry explicitly, with units. This is the amount needed for one standardization titration. You should report this value to 2 digits. C. Calculate the mass of KHP needed for four titrations, then add 0.1 gram for losses on drying and transfer. This is the amount you need to put in the drying oven at the beginning of lab. (Note: Only three standardization titrations are required. The extra allows you one repeat if you make a mistake.) D. Assuming the laboratory samples are 50% KHP, determine the mass of sample needed to react with 29 ml. of 0.1 M NaOH. Remember to show stoichiometry explicitly, with units. This is the amount needed for one analytical titration.