1. What is the Ideal Gas Law?

The Ideal Gas Law relates the pressure, volume, temperature, and number of moles of an ideal gas. It's expressed as PV = nRT, where P is pressure, V is volume, n is moles, R is the gas constant, and T is temperature.

2. How Does the Calculator Work?

The calculator uses the Ideal Gas Law formula:

Where:

• \( n \) — Amount of substance (moles)
• \( P \) — Pressure (atm)
• \( V \) — Volume (L)
• \( R \) — Ideal gas constant (0.0821 L·atm·K⁻¹·mol⁻¹)
• \( T \) — Temperature (K)

Explanation: The equation calculates the number of moles of gas when pressure, volume, and temperature are known.

3. Importance of Mole Calculation

Details: Calculating moles is fundamental in chemistry for stoichiometric calculations, determining reactant quantities, and predicting 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 forces, obeying the ideal gas law exactly.

Q2: How do I convert Celsius to Kelvin?
A: Add 273.15 to the Celsius temperature. For example, 25°C = 298.15 K.

Q3: What are typical values for R?
A: The value depends on units. Common values are 0.0821 L·atm·K⁻¹·mol⁻¹ or 8.314 J·K⁻¹·mol⁻¹.

Q4: When does the ideal gas law not apply?
A: At high pressures or low temperatures where real gases deviate from ideal behavior.

Q5: Can I use this for mixtures of gases?
A: Yes, but n will represent the total moles of all gases in the mixture.