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a You have a stock solution certified by a manufacturer to contain 210.0 + 0.2 ug s02-/mL. You would like to dilute it by a factor of 100 to obtain 2.100 ug/mL. Two possible methods of dilution are stated. For each method, calculate the resulting absolute uncertainty in concentration. Use the manufacturer's tolerances in the table for uncertainties. Glassware Tolerance 1-mL transfer pipet +0.006 mL 10-ml transfer pipet +0.02 mL 100-ml volumetric flask +0.08 mL Method A: Dilute 10.00 mL up to 100 mL with a transfer pipet and volumetric flask. Then take 10.00 mL of the dilute solution and dilute it again to 100 mL. absolute uncertainty: + ug/mL Method B: Dilute 1.000 mL up to 100 mL with a transfer pipet and volumetric flask. absolute uncertainty: ug/mL Why is one method more precise than the other? Method B is less precise because the absolute uncertainty in the 1-ml pipet is 0.006 mL, which is smaller than the uncertainties of the other glassware. Method B is more precise because the percent relative uncertainty in the 1-ml pipet is 0.6%, which is 3 times larger than the uncertainties of the other glassware. Method B is more precise because the absolute uncertainty in the 1-ml pipet is 0.006 mL, which is smaller than the uncertainties of the other glassware. Method B is less precise because the percent relative uncertainty in the 1-ml pipet is 0.6%, which is 3 times larger than the uncertainties of the other glassware