1. What is the Ideal Gas Law?

The Ideal Gas Law relates the pressure, volume, temperature, and number of moles of an ideal gas through the equation PV = nRT. It provides a good approximation of the behavior of many gases under various conditions.

2. How Does the Calculator Work?

The calculator uses the Ideal Gas Law equation:

Where:

• \( n \) — Number of moles (mol)
• \( P \) — Pressure (Pascals)
• \( V \) — Volume (cubic meters)
• \( R \) — Universal gas constant (8.314 J/mol·K)
• \( T \) — Temperature (Kelvin)

Explanation: The equation calculates the amount of gas (in moles) given its pressure, volume, and temperature, assuming ideal behavior.

3. Importance of Moles Calculation

Details: Calculating the number of moles is fundamental in chemistry for stoichiometric calculations, determining reactant quantities, and understanding gas behavior under different conditions.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What is an ideal gas?
A: An ideal gas is a theoretical gas whose molecules occupy negligible space and have no intermolecular interactions, obeying the ideal gas law exactly.

Q2: When does the ideal gas law not apply?
A: At high pressures or low temperatures where molecular interactions become significant, or for gases with large, complex molecules.

Q3: How do I convert to these units?
A: 1 atm = 101325 Pa, 1 L = 0.001 m³, °C to K = add 273.15

Q4: What is the value of R in other units?
A: R = 0.0821 L·atm/mol·K or 62.4 L·mmHg/mol·K

Q5: Can I use this for mixtures of gases?
A: Yes, the calculated n represents the total moles of all gases present in the mixture.