Sodium thiosulfate, na2s2o3, is used as a fixer in photographic film developing. the amount of na2s2o3 in a solution can be determined by a titration with iodine, i2, according to the equation: 2na2s2o3(aq) + i2(aq) --> na2s4o6 +2nai(aq). calculate the concentration of the na2s2o3 solution if 23.50 ml of a 0.1710 m i2 solution react exactly with a 100.0 ml sample of the na2s2o3 solution. use 4 sig. fig. aside, the end of the titration is determined by the color. nai is a pale yellow and i2 is a deep purple. just when the purple color persists, all the iodine that can react has reacted.

Plzz a sample of table sugar (sucrose, c12h22o11) has a mass of 7.801 g. ● a) calculate the number of moles of c12h22o11 in the sample b) calculate the number of moles of each element in c12h22o11 (number of moles of c, number of moles of h & number of moles of o) in the sample. (use your answer from part a as your starting point.) show your work and highlight your final answer. calculate the number of atoms of each element in c12h22o11 (number of atoms of c, number of atoms of h & number of atoms of o) in the sample. (use your answers from part b as your starting for each element.) show your work and highlight your final answer.