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What is the entropy change of the gas, heated in a steady-flow process at approximately atmospheric pressure,

(a) when 800 kj is added to 10 mol of ethylene initially at 200 degree censius(473.15k)

(b) when 2500kj is added to 15 mol of 1-butene initially at 260 degree censius(533.15K)

(c) when 1.05 GJ is added to 18.14kmol of ethylene initially at 260 degree censius (533.15k)

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