A certain liquid X has a normal freezing point of -2.20 °C and a freezing point depression constant K = 3.94 °C kg mol⁻¹ . A solution is prepared by dissolving some alanine (C,H,NO) in 300. g of X. This solution freezes at 8.7 °C. Calculate the mass of C,H.NO, that was dissolved. Round your answer to 2 significant digits.