1. What is Work Done by Gas?

The work done by a gas at constant pressure is calculated as the product of pressure and volume change. This represents the energy transferred by the gas as it expands or contracts.

2. How Does the Calculator Work?

The calculator uses the work equation:

Where:

• \( W \) — Work done by gas (Joules)
• \( P \) — Constant pressure (Pascals)
• \( \Delta V \) — Volume change (cubic meters)

Explanation: The equation shows that work equals pressure times the change in volume. Positive work means the gas does work on its surroundings (expansion), while negative work means work is done on the gas (compression).

3. Importance of Work Calculation

Details: Calculating work done by gases is essential in thermodynamics for understanding energy transfer in systems like engines, compressors, and biological processes.

4. Using the Calculator

Tips: Enter pressure in Pascals and volume change in cubic meters. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What are the units for this calculation?
A: Standard SI units are used - Pascals (Pa) for pressure and cubic meters (m³) for volume, resulting in Joules (J) for work.

Q2: Does this apply to changing pressure?
A: No, this simple formula only works for constant pressure processes. For variable pressure, integration is needed.

Q3: What's the difference between work done by gas and on gas?
A: Work done by gas (expansion) is positive, work done on gas (compression) is negative, represented by the sign of ΔV.

Q4: How does temperature relate to this work?
A: Temperature changes affect pressure and volume according to the ideal gas law, indirectly influencing the work done.

Q5: Can I use different units?
A: Yes, but you'll need to convert to consistent units before calculation (e.g., atm to Pa, liters to m³).