Question

During an experiment a scientist poured a 0.256-liter solution into a beaker. Four- hundredths of the solution was alcohol. How many liters of the solution was alcohol?

Answer 1

A `4%` `(v/v)` solution of alcohol in water is nominally `4` `mL` alcohol in `96` `mL` of water.

Explanation:

I have assumed that the volumes of alcohol and water are additive; which is good enough for a first approximation.

So if it's a `"4%"` solution, `"volume of alcohol"` `=` `4%xx0.256*L` `~=` `10*mL`.

The scientist probably filled up his beaker with lager.