1.) A solution containing iodide ions has a percent transmittance reading of 72.3%. what is the molarity of the iodide ion in this solution.

2.) A solution was made by dissolving 5.00 grams of sodioum iodide in enough water to make 500 ml solution. What is the expected percent transmittance?

3.) Solution A contains the iodide ion and has a percent T reading of 55.5%. Solution B contains the iodide ion and has a percent T reading of 77.7%. If 50mL of solution A is mixed with 100mL of solution B, what will the percent transmittance be?

4.)The Ksp of a slightly soluble substance with the formula M3y2 (mw=180) is 5.8 x106^-26. Find the solubility of a saturated solution of M3Y2 in units of grams per 100mL H2O. If the spectrophotometric constant K for the saturated solution is 1.25x10^4 M^-1 with respect to the M^2+ ion, what would be the percent transmittance reading on the spectrophotometer?