1. What is the Ideal Gas Law?

The Ideal Gas Law (PV = nRT) relates the pressure (P), volume (V), temperature (T), and number of moles (n) of an ideal gas. The constant R is the ideal gas constant (0.0821 L·atm/mol·K).

2. How Does the Calculator Work?

The calculator uses the Ideal Gas Law equation rearranged to solve for moles:

Where:

• \( n \) — Moles of gas (mol)
• \( P \) — Pressure (atm)
• \( V \) — Volume (L)
• \( R \) — Ideal gas constant (0.0821 L·atm/mol·K)
• \( T \) — Temperature (K)

Explanation: The equation calculates the amount of gas in moles based on its physical conditions.

3. Importance of Moles Calculation

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

4. Using the Calculator

Tips: Enter pressure in atmospheres (atm), volume in liters (L), and temperature in Kelvin (K). 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.

Q2: How accurate is this calculator for real gases?
A: It works well for most gases at low pressures and high temperatures. For more accurate results with real gases, use the Van der Waals equation.

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

Q4: What if my pressure is in different units?
A: Convert to atm first: 1 atm = 101.325 kPa = 760 mmHg = 14.6959 psi.

Q5: Can I use this for gas mixtures?
A: Yes, but it will give the total moles of all gases present. For individual components, use partial pressures.