Question #80727
To determine the concentration of iron in an unknown sample, a chemist analyzed the sample 5 times, and obtained the following results:339.276 ppm, 127.533 ppm, 220.031 ppm, 132.825 ppm and 415.818 if the accepted value for the concentration of iron in this sample is 230.476 determine standard deviation for the set of analysis.
1
Expert's answer
2018-09-12T05:43:17-0400
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