A) 20 J of heat is transferred from a hotter reservoir to a colder reservoir. Calculate ΔStot (J K-1) when the hotter reservoir is at 10 °C and the colder is at 0 °C. B) Calculate ΔStot (J K-1) when 10 J of heat flows reversibly from a 100 °C reservoir to another 100 °C reservoir. C)The change in total entropy is positive when heat is transferred between a hot object and a cold object in thermal contact because the process is irreversible. True or false?

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