Question

A chemistry student needs 90.0 g of acetone for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that thedensity of acetone is 0.790 g.cm -3. Calculate the volume of acetone the student should pour out.Be sure your answer has the correct number of significant digits.

Answer 1

The formula for density is

`d=(M)/(V)`

Where d is density, M is mass, and V is volume.

Given

`\begin{gathered} M=90.0g \\ d=0.790g/cm^3 \\ V=\text{?} \end{gathered}`
`\begin{gathered} 0.790=(90)/(V) \\ \text{cross multiply} \\ 0.790V=90 \\ \text{Divide both sides by }0.790 \\ (0.790V)/(0.790)=(90)/(0.790) \\ \\ \\ V=(90)/(0.790) \\ \\ V=113.92cm^3 \end{gathered}`

The volume of acetone the student should pour out is

`113.92cm^3`