Im stuck in both of these please help.

Tf=imkf 8. What is the minimum mass of ethylene glycol (C2H2O2) that must be dissolved in 14.5kg 1.86C/m) ) 1.86C/m) kF=1.86c/mi=1Tf=0C(24.8C)M=6291molL2HaO2MalMax: 2T. 9. Find the molar mass of pepsin, an enzyme that aids in digestion, if you have a 0.012L aqueous solution in which there is 200mg pepsin. It has an osmotic pressure of 1197.2 Pa at 27.0C