1. What is Methane Gas Density Calculator?

Definition: This calculator estimates the density of methane gas (CH₄) based on pressure and temperature using the ideal gas law.

Purpose: It helps engineers, chemists, and researchers determine methane density for various industrial and scientific applications.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \rho \) — Density of methane (kg/m³)
• \( P \) — Pressure (Pascals)
• \( M \) — Molar mass of methane (0.016 kg/mol)
• \( R \) — Universal gas constant (8.314 J/(mol·K))
• \( T \) — Temperature (Kelvin)

Explanation: The formula is derived from the ideal gas law, relating pressure, volume, and temperature of an ideal gas.

3. Importance of Methane Density Calculation

Details: Accurate methane density calculations are crucial for gas storage, pipeline design, energy calculations, and environmental studies.

4. Using the Calculator

Tips: Enter the pressure in Pascals and temperature in Kelvin (default 298.15K = 25°C). Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is molar mass fixed at 0.016 kg/mol?
A: This is the standard molar mass of methane (CH₄) based on its molecular weight.

Q2: How accurate is this calculation?
A: It's accurate for ideal gas conditions. For high pressures or low temperatures, real gas corrections may be needed.

Q3: What's a typical methane density at STP?
A: At standard temperature (273.15K) and pressure (101325 Pa), methane density is about 0.714 kg/m³.

Q4: How do I convert Celsius to Kelvin?
A: Add 273.15 to the Celsius temperature (e.g., 25°C = 298.15K).

Q5: Can I use this for other gases?
A: No, this is specific to methane. For other gases, you would need to change the molar mass value.