How to calculate the uncertainty of the value using the
uncertainties for 10 ml bulb pipette and the 100 ml standard flask?
How to obtain the value from the graph?
How To Calculate The Uncertainty Of The Value Using The Uncertainties For 10 Ml Bulb Pipette And The 100 Ml Standard Fla 1 (495.74 KiB) Viewed 10 times
OT From the equation of the line of best fit: Equation of line of best fit:..... X-0.0.387 x Substitute the absorbances of the unknown solutions into the line equation above and calculate the corresponding manganese concentrations for the diluted solution Unknown (Dihted) Solution Replicate #1 Cx. (mg/L.) Replicate 2 5.633 Replicate 3 5:673 15.633 5.6.33 Mean Css from the table above- ....... (mg/L) Question: Does this value agrees with that obtained from your graph? Calculation of mean deviation (Refer to page 10) (If this is zero mean deviation, then calculate the uncertainty of the value using the uncertainties for the 10 ml bulb pipette and the 100 mL standard flask, as per page 12): Mean deviation of C. values from the table above (mg/L) (1 significant figure only) Using the dilution factor, give the final concentration of the unknown solution: Final Result: C. in the unknown (undiluted stock) solution (mg/L) Conclusion
0.45 0.4 0.35 003872 0.3 nm) 0.25 Absorbance (e 0.2 0.15 0.1 0.05 0 0 4 8 10 12 2 6 Mn Concentration (mg/L) Figure 2. Standard curve for the determination of Mn in unknown Sample
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