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11 Nov 2019
9. After completing the 'Where's the Iron?' lab, John Q. Student was curious how much iron was present in other vegetables. After ashing a sample of spinach, he prepared a solution and measured the absorbance, which was found to be 0.278. Using the graph below, determine the concentration of the measured solution? Absorbance vs. Concentration y 8340รยท2x + 0.0004 0.4 0.3 0.2 0.1 0 00E+00 5.0E-06 1.0E-05 1.5E-05 2.0E-05 2.5E-05 3.OE-05 3.5E-05 4.0E-05 4.5E-05 Concentration (M) (a) 3.33x10-5 (b) 2.32x10* (c) 3.29x10* (d) 8.65x10* (e) 2.78x10
9. After completing the 'Where's the Iron?' lab, John Q. Student was curious how much iron was present in other vegetables. After ashing a sample of spinach, he prepared a solution and measured the absorbance, which was found to be 0.278. Using the graph below, determine the concentration of the measured solution? Absorbance vs. Concentration y 8340รยท2x + 0.0004 0.4 0.3 0.2 0.1 0 00E+00 5.0E-06 1.0E-05 1.5E-05 2.0E-05 2.5E-05 3.OE-05 3.5E-05 4.0E-05 4.5E-05 Concentration (M) (a) 3.33x10-5 (b) 2.32x10* (c) 3.29x10* (d) 8.65x10* (e) 2.78x10
Deanna HettingerLv2
18 Oct 2019