Determine if the following are systematic or random errors. It if is systematic classify it as personal, method or instrumental error. a. A 25-mL transfer pipet consistently delivers 25.031 ± 0.009 mL. b. A 10-mL buret delivered 1.9839 g of water when drained from exactly 0.00 to 2.00 mL. The next time I delivered water from the 0.00 to the 2.00 mL mark, the delivered mass was 1.9900 g. c. A 10-mL buret consistently delivers 1.98 ± 0.01 mL when drained from exactly 0 to exactly 2 mL and consistently delivers 2.03 mL ± 0.02 mL when drained from 2 to 4 mL. d. Four consecutive 20.0- L injections of a solution into a chromatograph were made and the area of a particular peak was 4 383, 4 410, 4 401, and 4 390 units. e. A hygroscopic unknown being weighed was not dried prior to the experiment. f. One component of a mixture being determined quantitatively by chromatography reacts with the column packing. g. A radioactive sample being counted repeatedly without any change in conditions yields a slightly different count at each trial. h. The tip of the pipet used in the analysis is broken
Determine if the following are systematic or random errors. It if is systematic classify it as personal, method or instrumental error.
a. A 25-mL transfer pipet consistently delivers 25.031 ± 0.009 mL.
b. A 10-mL buret delivered 1.9839 g of water when drained from exactly 0.00 to 2.00
mL. The next time I delivered water from the 0.00 to the 2.00 mL mark, the
delivered mass was 1.9900 g.
c. A 10-mL buret consistently delivers 1.98 ± 0.01 mL when drained from exactly 0
to exactly 2 mL and consistently delivers 2.03 mL ± 0.02 mL when drained from 2
to 4 mL.
d. Four consecutive 20.0- L injections of a solution into a chromatograph were made
and the area of a particular peak was 4 383, 4 410, 4 401, and 4 390 units.
e. A hygroscopic unknown being weighed was not dried prior to the experiment.
f. One component of a mixture being determined quantitatively by chromatography
reacts with the column packing.
g. A radioactive sample being counted repeatedly without any change in conditions
yields a slightly different count at each trial.
h. The tip of the pipet used in the analysis is broken
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