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18 June, 05:31

A pharmacist attempts to weigh 100 milligrams of codeine sulfate on a balance with a sensitivity requirement of 4 milligrams. Calculate the maximum potential error (nearest hundredth) in terms of percentage (%).

2) A 10-milliliter graduate weighs 42.745 grams. When 6 milliliters of distilled water are measured in it, the combined weight of graduate and water is 48.540 grams. By definition, 6 milliliters of water should weigh 6 grams. Calculate the weight of the measured water and express any deviation from 6 grams as percentage of error (%, to the nearest hundredth).

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  1. 18 June, 06:01
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    4 %

    2) 3.42 %

    Explanation:

    Sensitivity requirement of 4 milligram means it is not sensitive below 4 milligram or can not measure below 4 milligram.

    Given, 4 milligram is the maximum error possible.

    Measured weight = 100 milligram

    So percentage maximum potential error

    = (4 / 100) x 100

    4 %

    2)

    As per measurement

    weight of 6 milliliters of water

    = 48.540 - 42.745 = 5.795 gram

    6 milliliters of water should measure 6 grams

    Deviation = 6 - 5.795 = - 0.205 gram.

    Percentage of error = (.205 / 6) x 100

    = 3.42 %
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