An 8-cm-internal-diameter, 30-cm-high pitcher half-filled with water is left in a dry room at 15 °c and 87 kpa with its top open. if the water is maintained at 15 °c at all times, determine how long it will take to for the water to evaporate completely?

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution. calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.