1 A certain liquid X has a normal freezing point of 3.30 °C and a freezing point depression constant K, -3.27 °C-kg-mol A solution is prepared by dissolving some ammonium chloride (NH4Cl) in 400. g of X. This solution freezes at 1.6 °C. Calculate the mass of NH4Cl that was dissolved. Be sure your answer is rounded to the correct number of significiant digits. x10 5 ?