Question

If the density of benzene is `0.8786*g*mL^-1`, what is the mass of a `175.4*mL` volume?

Answer 1

Approx....`150*g`

Explanation:

Look at the quotient defines density....

`"density,"` `rho="Mass of solvent"/"Volume of solvent"`...and this units of `g*mL^-1` are appropriate....

To get the mass, we take the product....

`"Mass of solvent"=rhoxx"volume of solvent"`

`0.8786*g*cancel(mL^-1)xx175.4*cancel(mL)=??g`

If benzene were added to water to form solvent layers, which layer would be on the bottom?

Answer 2

154.10644 g

Explanation:

Using dimensional analysis,
`175.4mL(0.8786g/(mL))`
`=154.10644g`

Using the formula for density,
`rho=(mass)/(volume)`

Rearranging the equation,
`mass=rho*volume`
`mass=0.8786*175.4`
`mass=154.10644g`