1. Your boss advises you try to dissolve the tablet first in 100 mL of DI water. Your sample is a complex mixture of dye

[answerhappygod]

1. Your boss advises you try to dissolve the tablet first in 100mL of DI water. Your sample is a complexmixture of dye, analyte, and filler material. Provide a reasonableargument using what you know aboutsolubility and chemistry, to convince a coworker or your boss thatall is not lost if the sample looks to notcompletely dissolve.2. Estimate the MDL of the Fe-bipyridyl method as three times thestandard deviation of a method blank,analyzed at 522 nm. Absorbance values of a method blank and theequation of the calibration line aregiven in the table below. The correct answer to this question willserve as the estimated MDL needed toprepare your MDL standard iron solution for the experiment. Hint:For the purpose of maintaining correctsignificant figures, the calculation should be done by converting Ato concentration units before calculatingfor the MDL. The calibration equation was generated by measuringstandard solutions (units: ppm) (x-values) and measuring their absorbance (y-values).3. One pill of the iron supplement was crushed with mortar andpestle. The result was slurried with a fewmL of DI water, and then quantitatively transferred to a 100 mLvolumetric flask. Before diluting to themark, a little HCl was added to ensure full dissolution of the ironmaterial. After mixing, 1.00 mL of thestock sample solution was diluted to 100 mL using a volumetricpipet and a 100 mL volumetric flask. If weuse a 40.00 mL aliquot to prepare the sample, estimate theconcentration of the resulting, 100 mLsolution. Will this concentration fall within our current set ofplanned standards (see below)? Use math tojustify your answer.Blank Aliquot Absorbance1 -0.0032 0.0033 0.0014 -0.0015 0.0016 0.0007 0.002Calibration Equation: y = 0.166812x - 0.00666
4. Calculate what the estimated increase in iron concentrationshould be if a 1.00 mL spike of ~100 ppm Feis used for the spike recovery test. This question only addressesthe general calculation for the spike.
PRO TIP: Use the actual concentration of the spike solution youprepare in the lab whendetermining the results for the spike recovery analysis in thesubsequent experiment.