please help with steps for all parts. will upvote for sure!

1. Assuming the validity of Raoult's Law and the shortcut vapour pressure equation, do the following calculations for a system with overall composition of 10mol% benzene(1), 40mol% ethylbenzene(2) and 50mol% toluene(3): a) Find the bubble pressure at T=100C. What is the composition (yi) of the first bubble of vapour formed? b) Find the dew pressure at T=100C. What is the composition (xi) of the first drop of liquid formed? c) Find the bubble point temperature at P=101.3kPa. What is the composition (yi) of the first bubble of vapour formed? d) For a flash at T=100C and P=65kPa, find the vapour and liquid phase compositions, yi and xi, and find what molar fraction of the two-phase system is vapour