Gold can be determined in solutions containing high concentrations of diverseions by fCP-AES.'9 Aliquots of 50.0 mL of the sample solution were transferredto each of four 100.0 mL volumetric flasks. A solution was preparedcontaining 10.0 mg/L Au in 20% H2SO" and quantities of this solution wereadded to the sample solutions to give 0, 2.5, 5, and 10 mg/L added Au in eachof the llasks. The solutions were made up to a total volume of 100.0 mL, mixed,and analyzed by ICP-AES. The resulting data are presented in the followingtable.Added An,mg/L0.02.55.010.012,56819,32426,62240,021(it) Use a spreadsheet to perform a least-squares analysis to determine theslope, intercept, and regression statistics, including the standard deviationabout regression.(b) Use your results to find the concentration of gold in the sample solutionin mg/L.(c) The known concentration of gold in the sample is 8.51 mg/L. Test the hypothesisthat your result is equal to this value at the 95% confidence level.(d) Compare your result to the result reported by Whitehead et aI., and commenton any differences.

Chapter 4 Thursday, February 4, 2016 4:48 PM Chemical bond: attractive force that holds atoms together An ion forms when an atom's number of electrons changes. Metals lose valence electrons Nonmetals gain valence electrons Zinc and cadmium is +2, silver is +1 ALUMINUM AND GALLIUM….ZINC, AND CADMIUM. ANNNDDDDDDSILVER. Group VIIA nonmetals gain 1 e: -1 F- is fluoride ion Cl- is chloride...