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Question 1 of 3
A balance has a sensitivity of 20 milligrams. If the maximum allowable error is 4 %, what is the smallest amount of a substance (in milligrams) that can be weighed on this balance?
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Least Weighable Amount
Least Weighable Amount
4
Least Weighable Amount = 500 mg
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Question 2 of 3
What is the smallest amount of a substance (in milligrams) that can be weighed on a balance with a sensitivity of 6 milligrams and a maximum potential error of 5 %?
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Least Weighable Amount
Least Weighable Amount
5
Least Weighable Amount = 120 mg
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Question 3 of 3
For a particular weighing, an accuracy of 2 % is needed. The balance is sensitive to 3 millligrams. What is the minimum amount of a substance that can be weighed (in milligrams)?
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Least Weighable Amount
The sensitivity is 3 mg so the maximum error is 3 mg.
Least Weighable Amount
2
Least Weighable Amount = 150 mg
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