A mixture contains 20% O2 with CP = 15 J/^oC and 80% CO2 with CP = 20 J/^oC, what is the average CP of mixture?

A mixture contains 20% O2 with CP = 15 J/^oC and 80% CO2 with CP = 20 J/^oC, what is the average CP of mixture?

(a) 3 J/^oC

(b) 9 J/^oC

(c) 16 J/^oC

(d) 19 J/^oC

This question was addressed to me during an internship interview.

My question comes from Heat Capacity Equations in section Introduction to Energy Balances for Processes without Reaction and Calculation of Enthalpy Changes of Basic Chemical Engineering

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A mixture contains 20% O2 with CP = 15 J/^oC and 80% CO2 with CP = 20 J/^oC, what is the average CP of mixture?

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