True or False 1. if there is heat flow present during a process, the entropy of

Question

True or False

1. if there is heat flow present during a process, the entropy of the object receiving the positive heat increases TRUE O FALSE 2. if there is heat flow present during a process, this process must be irreversible TRUE O FALSE O 3. if the entropy of any object involved in a process rises, the process is irreversible, because the entropy never goes down. TRUE FALSE 4. a MACROstate of an Einstein solid that has a of the energy on the first N/2 oscillators is as likely as the equilibrium macroscopic state in which the energy is spread evenly. TRUE FALSE 5. a MICROstate of an Einstein solid that has all of the energy in the first oscillator is as likely as the microstate with the energy evenly distributed across the oscillators. TRUE FALSE

Explanation / Answer

1) . TRUE:

When something is at 0K its molecules have Zero kinetics energy so there is no randomness. If you increase the temperature you are actually giving the energy to molecules which excite them and they start to move so the entropy will increse.So entropy always increase with temperature and decreases with decrease in temperature.

2). FALSE: Reversible process is just theoretical. In reality, it is impossible to carry out a process in a reversible manner.

3). TRUE: An irreversible process increases the entropy of the universe. Because entropy is a state function, the change in entropy of the system is the same, whether theprocess is reversible or irreversible.

4). TRUE

5). FALSE

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