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24 July, 06:04

A chemistry student needs 40.0 mL of pentane for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of pentane is 0.626 g cm^3. Calculate the mass of pentane the student should weigh out.

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  1. 24 July, 08:31
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    25.04 g is the mass of pentane

    Explanation:

    Pentane density = Pentane mass / Pentane volume

    1 cm³ = 1mL

    0.626 g/mL = Pentane mass / Pentane volume

    0.626 g/mL = Pentane mass / 40 mL

    0.626 g/mL. 40 mL = Pentane mass → 25.04 g
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