1.What is the first law of thermodynamics? 2. Provide an example if the first law of...

1.What is the first law of thermodynamics?

2. Provide an example if the first law of thermodynamics.

3. What is entropy?

Solutions

Expert Solution

First Law Of Thermodynamics: It states that the total energy of the universe remains constant. In other words, the total energy of the system and its surrounding is conserved. Energy can be transferred from one location to another, but it can neither be created nor be destroyed.

ΔU (Change in Internal Energy)= Q (Heat added to the system) - W (Work done by the system)

Example of First Law Of Thermodynamics: Consider a crowd inside a room. A person is feeling warn and starts sweating. It means the person body is becoming cool by sweating off. The person sweat will evaporate as it will absorb more heat from the surrounding. This evaporated sweat will be transferred into the air of the room. This will increase the temperature of the room. Therefore, there is no loss of heat, it is merely transferred from one form to another.

Entropy: It is defined as the number of ways a system needs to be arranged. The higher the entropy, the more system is disordered. Example: If you spray a perfume in the corner of your room. If will spread and fill up in the whole room. The perfume is arranged from a state to another state by spreading throughout the room.

queen_honey_blossom answered 1 year ago

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