When 1.150 grams of an unknown nonelectrolyte dissolves in 10.0 grams of water, the solution freezes at -2.16°C. What is the molecular weight of the unknown compound? Kf for water = 1.86°C/m.
i) 88.6 g/mol
ii) 116 g/mol
iii) 74.2 g/mol
iv) 99.1 g/mol
v) 132 g/mol