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11 January, 10:48

A chemistry student needs 75.0 mL of glycerol for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of glycerol is 1.26 g. cm⁻³.

Calculate the mass of glycerol the student should weigh out. Be sure your answer has the correct number of significant digits.

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  1. 11 January, 11:12
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    Answer: 94.5g

    Explanation:

    1mL = 1cm3

    Volume = 75mL = 75cm3

    Density = 1.26 g/cm3

    Mass = ?

    Mass = Density x volume

    Mass = 1.26 x 75 = 94.5g
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