Question

A chemistry student needs 65.0 g 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 volume of pentane the student should pour out. Be sure your answer has the correct number of significant digits.

Answer 1

Answer : The volume of pentane will be,
`1.04* 10^2cm^3`

Explanation :

To calculate mass of a substance, we use the equation:

`\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}`

We are given:

Density of penatne =
`0.626g/cm^3`

Mass of pentane = 65.0 g

Now put all the given values in above equation, we get:

`0.626g/cm^3=\frac{65.0g}{\text{Volume of pentane}}`

`\text{Volume of pentane}=103.83cm^3=1.04* 10^2cm^3`

Hence, the volume of pentane will be,
`1.04* 10^2cm^3`