Question

A chemistry student needs of 40mL diethylamine for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of diethylamine is 0.7 . Calculate the mass of diethylamine the student should weigh out. Round your answer to significant digits.

Answer 1

Explanation:

Mass = density × volume

m = (0.7 g/mL) × (40 mL)

m = 28 g

Rounding to 1 significant figure, the student should weigh out 30 grams of diethylamine.