Suggest two ways to seperate naphthalene from urea?

Question

Give me a simple way to do that is proven to work, not difficult enough to a degree where i cant understand it. ( I am in AP chem)

Answer 1

1. Recrystallize urea from naphthalene.

2. Sublime naphthalene from urea.

1. Add water to the mixture. Boil. Let cool. Filter the liquid. Naphthalene should crystallize from the cooling liquid. Collect the naphthalene from the filter paper. Evaporate the water to collect the urea.

2. Heat the mixture. Place dry ice (CO2[s]) in a watch glass just above the heated mixture. The naphthalene condenses on the underside of the watch glass. The urea remains behind.

Answer 2

Napthalene sublimes while urea doesn't. So heat and collect the sublimate. Urea is water soluble, while Naphthalene isn't. So Shake the mixture with water and collect the aqueous portion. This would be a solution of urea.