A chemistry student needs 30,0 mL of pentane for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of pentane is. Calculate the mass of pentane the student should weigh out. Round your answer to significant digits.

Question

Chemistry

Salma Acevedo

27 September, 15:14

A chemistry student needs 30,0 mL of pentane for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of pentane is. Calculate the mass of pentane the student should weigh out. Round your answer to significant digits.

+5

Answers (1)

Know the Answer?

Audi · Answer 1

1.878g

Explanation:

Volume = 30.0ml

Density = 0.626gcm-3

Mass = ?

Be careful in this kind of questions to check for the units. In this case one has to remember 1 mL equal 1 cm³ so density = 0.626g/ml

The relationship between all three parameters is given by the equationn below;

Mass = Density * Volume

Mass = 0.626g/ml * 30 = 1.878g