Calculate the density of methanol (ch3oh)?

This question is incomplete so because of unavailability of proper information i will simply let you understand this by an example:
lets say you have 4.2 moles of methanol in 5.67 L.

Firstly convert the moles into mass 

mass = moles x molar mass of methanol

mass = 4.2 moles x 32.05 g/mol = 134.61 g 

Density = mass / vol 
convert 5.67L into mL which is 5670mL
putting values
134.61 / 5670 mL = 0.0237 g/mL
hope you get it!

Deposition is the transition of matter going from gas to solid without passing through the liquid phase.a.) gas—-> solid