1. What is Charles' Law?

Charles' Law states that the volume of a given amount of gas is directly proportional to its temperature on the Kelvin scale when pressure is held constant. This fundamental gas law helps predict how gases will behave when heated or cooled.

2. How Does the Calculator Work?

The calculator uses Charles' Law equation:

Where:

• \( V_1 \) — Initial volume (L)
• \( T_1 \) — Initial temperature (K)
• \( V_2 \) — Final volume (L)
• \( T_2 \) — Final temperature (K)

Explanation: The calculator solves for whichever variable is left blank (or zero) when the other three are provided.

3. Importance of Charles' Law

Details: Charles' Law is crucial in thermodynamics, engineering, and various scientific applications. It helps predict gas behavior in weather systems, hot air balloons, and many industrial processes.

4. Using the Calculator

Tips: Enter any three known values (leaving one field blank or zero) to calculate the missing variable. All temperatures must be in Kelvin (K).

5. Frequently Asked Questions (FAQ)

Q1: Why must temperature be in Kelvin?
A: Kelvin is an absolute temperature scale where 0 K represents absolute zero, making it necessary for gas law calculations.

Q2: What are the assumptions of Charles' Law?
A: It assumes constant pressure, ideal gas behavior, and a closed system with constant amount of gas.

Q3: How do I convert Celsius to Kelvin?
A: Add 273.15 to the Celsius temperature (K = °C + 273.15).

Q4: Does Charles' Law apply to liquids or solids?
A: No, it only applies to gases. The thermal expansion of liquids and solids follows different patterns.

Q5: What's the relationship between volume and temperature?
A: They are directly proportional - as temperature increases, volume increases proportionally when pressure is constant.