Question

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.

Answer 1

25.04 g is the mass of pentane

Step-by-step 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