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What is the entropy change of 10 mol of ethylene gas, initially at 200C, when 500 kJ of heat is added in a steady-flow process

What is the entropy change of 10 mol of ethylene gas, initially at 200C, when 500 kJ of heat is added in a steady-flow process at atmospheric pressure?

Consider constant specific heat capacity: Cp = 79 J.mol-1.K-1

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