A student performed three aqueous layer titrations in Part 1 using a standard sodium thiosulfate solution with a concentration of 0.01155M. They reported the following measurements:
Determination #1 Determination #2 Determination #3
Final Aqueous Layer 19.98 mL 29.85 mL 39.88 mL
Burette Reading
Initial Aqueous Layer 10.22 mL 19.98 mL 29.85 mL
Burette Reading
Final Thiosulfate 33.86 mL 33.98 mL 34.67 mL
Burette Reading
Initial Thiosulfate 1.03 mL 0.99 mL 0.84 mL
Burette Reading
What is the concentration of reducible iodine (in mol/L) in the aqueous phase based on the data from their first titration (ie. their first determination)? Report your answer to the correct number of significant figures and only report the numerical value (no units).