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An unknown sample of Cd2+ gave an absorbance reading of 0.259 in an atomic absorbtionan analysis. then 0.5 mL of solution containing 4 ppm of CD2+ was mixed with 50.0 mLof the unknown sample. this solution gave an absorbance reading of 0.368.
(A) denoting the initial, unknown concentration CD2+, write an equation to calculate the final concentration , CD2+ considering the dilution factor, units are ppm.
(B) In a similar manner, write the final concentration of added Cd2+ standard, designated as [S] known.
(C) Find the concentration of Cd2+ in the unknown.
The molar mass of a protein is determined from a measurement of the osmotic pressure. If 0.01 grams of the protein is dissolved in 1 ml. and osmotic pressure
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The solubility product constant (Ksp) for the dissolution of SrSO4 as represented by the chemical equation is 2.5 x 10-7.
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Draw the following compound. Be sure to specify the stereochemistry via wedge-and-dash bonds.
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