Consider a mixture that is 30% n-butane, 40% n-pentane and 30% n-hexane. We wish to perform the following calculations.

1. Calculate the bubble pressure and vapor compositions at 80 C.
2. Calculate the dew pressure and liquid compositions at 80 C.
3. Calculate the bubble temperature and vapor compositions at 2 bar.
4. Calculate the dew temperature and liquid compositions at 2 bar.
5. Calculate the fraction of the butane that leaves in the vapor phase if this mixture is sent to a flash unit that operates at 100 C and 6 bar.