The student prepared a KIO3 solution that was .0100 M IO3-. The student averaged 15.00mL of Na2S2O3 solution for the 3 titrations. The student weighed out .110 grams of sample for all 3 trials. The student averaged 6.40mL of Na2S2O3 for all 3 titrations.
Questions:
1. Calculate the average percentage vitamin C in the sample.
2. Calculate the number of milligrams of the unknown powder needed to make a 100mg vitamin C tablet.