This question is incomplete so because of unavailability of proper information i will simply let you understand this by an example: <span>lets say you have 4.2 moles of methanol in 5.67 L.
</span>Firstly convert the moles into mass
<span>mass = moles x molar mass of methanol</span>
<span>mass = 4.2 moles x 32.05 g/mol = 134.61 g </span>
<span>Density = mass / vol </span> convert 5.67L into mL which is 5670mL putting values <span>134.61 / 5670 mL = 0.0237 g/mL </span>hope you get it!
