1. What is Charles's Law?

Charles's Law states that the volume of an ideal gas is directly proportional to its absolute temperature when pressure is held constant. This fundamental gas law helps predict how gas volumes change with temperature variations.

2. How Does the Calculator Work?

The calculator uses Charles's Law formula:

Where:

• \( V_t \) — Volume at temperature t (m³)
• \( V_0 \) — Volume at 0°C (m³)
• \( t \) — Temperature in degree Celsius (°C)
• 273 — Absolute zero in Celsius scale (0 K = -273°C)

Explanation: The formula converts Celsius temperature to Kelvin scale (by adding 273) and calculates the proportional volume change based on the temperature ratio.

3. Importance of Charles's Law

Details: Charles's Law is crucial for understanding gas behavior in various applications including meteorology, engineering, scuba diving, and hot air ballooning. It helps predict how gases expand when heated and contract when cooled.

4. Using the Calculator

Tips: Enter volume at 0°C in cubic meters and temperature in degrees Celsius. Ensure all values are valid (volume > 0).

5. Frequently Asked Questions (FAQ)

Q1: Why do we add 273 to Celsius temperature?
A: We add 273 to convert Celsius to Kelvin, the absolute temperature scale required for gas law calculations where 0 K represents absolute zero.

Q2: Does Charles's Law apply to all gases?
A: Charles's Law applies to ideal gases. Real gases follow this law approximately at moderate temperatures and pressures.

Q3: What happens if pressure changes?
A: Charles's Law assumes constant pressure. If pressure changes, Boyle's Law or the combined gas law must be used.

Q4: Can this calculator be used for negative temperatures?
A: Yes, the calculator works for temperatures below 0°C, but remember that gas volumes cannot be negative.

Q5: What are practical applications of Charles's Law?
A: Applications include hot air balloons, weather balloons, tire pressure monitoring, and understanding atmospheric phenomena.