Estimate the fugacity of one of the following: (a) Cyclopentane at 383.15 K (110°C) and 275 bar. At 383.15 K (110°C) the vapor pressure of cyclopentane is 5.267 bar. (b) 1-Butene at 393.15 K (120°C) and 34 bar. At 393.15 K (120°C) the vapor pressure of 1-butene is 25.83 bar.

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).

The answer is a. stable, hope i ya