Suppose that you add 24.3 g of an unknown molecular compound to 0.250 kg of benzene, which has a Kf of 5.12 oC/m. With the added solute, you find that there is a freezing point depression of 2.50 oC compared to pure benzene. What is the molar mass (in g/mol) of the unknown compound?

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

la respuesta es si te gusta hacer lo que siempre haces cuando nunca ves a alguien en el espejo porque sabes que no siempre están ahí.

i just learnt this recently but i need to look through my notes again