When 1.2 g of Sulphur is melted with 15 g of naphthalene, the solution freezes at`77.2^(@)C`. What is the molar mass of this form of Sulphur?
Deta for napthalene:
Melting point (f.pt.) ` 80.0^(@)C`
Freezing point depression constant `K_(f) 6.80Km^(-1)`