# Introduction to Thermodynamics - Two Basic Problems

• decatte
In summary, the conversation discusses two scenarios involving kettles boiling water at a constant evaporation rate of 1g/min. In the first scenario, a kettle holding 1 lt. of water is analyzed to determine how long it will take for it to dry out. In the second scenario, a kettle holding 1 lt. of water and 20g of salt is studied to derive a mathematical relationship for how the salt concentration changes with respect to time. However, no solutions are provided as it is a homework problem.
decatte
Homework Statement

1. A kettle holding 1 lt. of water is boiling. Assuming water is evaporating at a constant evaporation rate of 1g/min, determine how long it will take for the kettle to dry out.

2. Another kettle holding 1 lt. of water and 20g of salt is also boiling. Again water evaporates at a rate of 1g/min. This time you are asked to derive a mathematical relationship for how salt concentration in the kettle changes with respect to time.

I need Help!

These are so easy that it's difficult to give you a hint without telling you the complete answer, but here's a try:

1. 1 liter weighs 1 kg.

2. The amount of water in the kettle (actually the weight in grams) after t seconds is 1000-t/60.

WELCOME TO pf .

Show some work before we take over ur problem.

We just help in your homework ..we don't solve it buddy.

## 1. What is thermodynamics?

Thermodynamics is the branch of science that deals with the relationships and interactions between heat, energy, and work.

## 2. What are the two basic problems addressed in introduction to thermodynamics?

The two basic problems addressed in introduction to thermodynamics are the first and second laws of thermodynamics. The first law states that energy cannot be created or destroyed, only transferred or converted. The second law states that the total entropy of a closed system will always increase over time.

## 3. Why is thermodynamics important?

Thermodynamics is important because it helps us understand how energy behaves and how it can be harnessed for useful purposes. It also has many practical applications in fields such as engineering, chemistry, and biology.

## 4. What are some real-world examples of thermodynamics?

Some real-world examples of thermodynamics include the operation of a car engine, the functioning of a refrigerator, and the conversion of heat energy into electricity in a power plant.

## 5. How does thermodynamics relate to other scientific fields?

Thermodynamics has connections to many other scientific fields such as physics, chemistry, and engineering. It is also closely related to the study of energy and how it is transferred and transformed in various systems.

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