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Using the data below, plot a graph and answer the following questions. ( graph plot 1 0 marks ) A 2 . 8 4 5
Using the data below, plot a graph and answer the following questions. graph plot marks A sample of an unknown compound containing copper II ion was dissolved in water in a volumetric flask. The absorbance of this solution was found to be at in a cell.
A Use the graph to find the concentration of copper II ion in the solution. marks
B Calculate the percentage of cobalt in the unknown compound. marks
C What percent of light is transmitted by the original copper II solution? marks
D What concentration of iron thiocyanate will absorb of the entering light? marks
tableConc Absorbance
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