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An analytic balance has uncertainty in m...

An analytic balance has uncertainty in measurement equal to `+- 1 mg`. Then report the result in terms of percentage if the weight of a compound is
a. `1 g` b. `10 g` c. `100 g`

Text Solution

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a. `1 +- 0.1 %` b. `10 +- 0.01 %` c. `100 +- 0.001 %`
The uncertainty in measurement is expressed in terms of percentage by putting `+-` sign before it, e.g., `150 +- 1%` etc. Smaller the quantity to be measured, greater is the percentage uncertainty, and the instrument should be more precise for the measurement of samller quanitties.
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