Problem: What is the second law of thermodynamics? (circle one) Change of entropy of the universe is conserved for a spontaneous process. Change of entropy of the system must be positive for a process to be spontaneous. Change of entropy of the universe must be positive for a spontaneous process. 

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What is the second law of thermodynamics? (circle one)

Change of entropy of the universe is conserved for a spontaneous process.

Change of entropy of the system must be positive for a process to be spontaneous.

Change of entropy of the universe must be positive for a spontaneous process. 

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