On a balance that is sensitive to 6 mg, what is the smallest quantity that can be weighed with a potential error of 5 percent or less?
80 mg
100 mg
120 mg
160 mg
120 mg
Rationale: For this balance sensitivity, the smallest quantity that can be weighed with a potential error of 5% or less would be 120 mg. The formula is as follows: 100 x 6 mg, divided by 5% = 120 mg.
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