A certain gaseous mixture is composed of the following: 20 mol A, 40 mol B, and 30 mol C. The mixture was heated from 25 ⁰C to 90 ⁰C at constant pressure. Specific heat capacity at constant pressure...

A certain gaseous mixture is composed of the following: 20 mol A, 40 mol B, and 30 mol C. The mixture was heated from 25 ⁰C to 90 ⁰C at constant pressure. Specific heat capacity at constant pressure of the components of the mixture is as follows:


Cp of A = 250 J/mol-K
Cp of B = 200 J/mol-K
Cp of C = 150 J/mol-K


Determine the change in entropy in kJ/K.