1872 g of 1-propanol (60 g/mol) was mixed with an unknown amount of 1-butanol (74 g/ mol) at 760 mmHg. When the above mixture is heated to 106.5C, the number of moles in the liquid state is twice the number of moles in the gas phase, a) calculate the global composition of the mixture; b) calculate the mass of 1-butanol present in the system; c) Calculate the number of moles of 1-butanol present in the gas phase. To solve this problem, construct the T vs Zpropanol diagram.