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A mixture contains 20% O2 with CP = 10 J/^oC, 30% N2 with CP = 20 J/^oC and 50% CO2 with CP= 40 J/^oC, what is the average CP of mixture?(a) 20 J/^oC(b) 28 J/^oC(c) 34 J/^oC(d) 42 J/^oC |
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Answer» The correct option is (b) 28 J/^oC Easiest explanation: Average CP = 0.2*10 + 0.3*20 + 0.5*40 = 2 + 6 + 20 = 28 J/^oC. |
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