Question

A chemistry student needs 15.0 g of tetrahydrofuran for an experiment. The density of tetrahydrofuran is 0.889 g/cm³. Calculate the volume of tetrahydrofuran the student should pour out. Round your answer to 3 significant digits.

a) 16.9 cm³
b) 17.0 cm³
c) 17.1 cm³
d) 17.2 cm³

Answer 1

Using the formula for density (Density = Mass / Volume), the volume of tetrahydrofuran required for 15.0 g of substance with a density of 0.889 g/cm³ is 16.9 cm³ (rounded to three significant digits).

Step-by-step explanation:

To calculate the volume of tetrahydrofuran the student should pour out using its density, we use the formula:

Density = Mass / Volume

Volume = Mass / Density

Given the mass of tetrahydrofuran needed is 15.0 g and its density is 0.889 g/cm³, we can calculate the volume as follows:

Volume = 15.0 g / 0.889 g/cm³

Volume = 16.87 cm³

This value rounded to three significant digits is 16.9 cm³, so the student should pour out 16.9 cm³ of tetrahydrofuran for the experiment, which corresponds to answer choice (a).