If a sample of air were separated into nitrogen and oxygen molecules (ignoring other gases present), what would be the sign of ΔS for this process? Explain your answer. The next four questions relate to the following paragraph [Frank l. Lambert, Journal of Chemical Education, 76(10), 1999, 1385].  “The movement of macro objects from one location to another by an external agent involves no change in the objects’ physical (thermodynamic) entropy. The agent of movement undergoes a thermodynamic entropy increase in the process.”