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You place 50 kg of steel (mild) at 140 oC into a container containing 150 kg...

You place 50 kg of steel (mild) at 140 oC into a container containing 150 kg of oil (light) initially at 20 oC. Assume no thermal energy loss from the container and that the heat capacities of the steel and oil are constant. Determine the total change in entropy of the steel-oil system when the system reaches equilibrium. Give your answer in  kJKkJK

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