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Li was determined by atomic emission with the method of standard addition. Prepare a
Chapter 20, Problem 20-A(choose chapter or problem)
Li was determined by atomic emission with the method of standard addition. Prepare a standard addition graph (Section 5-3) to find the concentration of Li and its uncertainty in pure unknown. The Li standard contained 1.62 g Li/mL. Emission Unknown Standard Final volume intensity (mL) (mL) (mL) (arbitrary units) 10.00 0.00 100.0 309 10.00 5.00 100.0 452 10.00 10.00 100.0 600 10.00 15.00 100.0 765 10.00 20.00 100.0 906
Questions & Answers
QUESTION:
Li was determined by atomic emission with the method of standard addition. Prepare a standard addition graph (Section 5-3) to find the concentration of Li and its uncertainty in pure unknown. The Li standard contained 1.62 g Li/mL. Emission Unknown Standard Final volume intensity (mL) (mL) (mL) (arbitrary units) 10.00 0.00 100.0 309 10.00 5.00 100.0 452 10.00 10.00 100.0 600 10.00 15.00 100.0 765 10.00 20.00 100.0 906
ANSWER:Step 1 of 4
Concentration of the standard 
Calculated value of the Li concentration 
Difference in the value = 0.02
Uncertainty
i.e, uncertainty in result +/- 0.02