A drop of acetone (nail polish remover) has a mass of 35 mg and a density of 0.788 g/cm3 . What is its volume in cubic centimeters?

Since the mass is given in mg and the density in g/cm3, the first step is to convert one into compatible units. Let's convert the mass in mg into grams by dividing by 1000 (there is 1000 mg in 1 gram). So the mass is 0.035 g.

Since density = mass/volume, then volume = mass/density

So Volume = 0.035g/0.788 g/cm3 = 0.0444 cm3

the dissolution of polymer can be thermodynamically described in 2 steps.