Density of Nitrogen Gas at 25°C

Nitrogen Density Formula:

\[ \rho = \frac{P \times 0.028}{8.314 \times 298.15} \]

Nitrogen Density (kg/m³):

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1. What is Nitrogen Gas Density at 25°C?

Definition: This calculator estimates the density of nitrogen gas at standard temperature (25°C/298.15K) based on pressure.

Purpose: It helps scientists, engineers, and students determine nitrogen gas density for various applications in chemistry, physics, and engineering.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ \rho = \frac{P \times 0.028}{8.314 \times 298.15} \]

Where:

\( \rho \) — Density of nitrogen (kg/m³)
\( P \) — Pressure (Pascals)
0.028 — Molar mass of nitrogen (kg/mol)
8.314 — Universal gas constant (J/(mol·K))
298.15 — Standard temperature (25°C in Kelvin)

Explanation: The formula is derived from the ideal gas law, calculating how nitrogen density changes with pressure at constant temperature.

3. Importance of Nitrogen Density Calculation

Details: Accurate nitrogen density values are crucial for gas storage, industrial processes, laboratory experiments, and various engineering applications.

4. Using the Calculator

Tips: Enter the pressure in Pascals (default is standard atmospheric pressure 101325 Pa). The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the typical density of nitrogen at 1 atm?
A: At standard conditions (101325 Pa, 25°C), nitrogen density is approximately 1.165 kg/m³.

Q2: Does this work for other temperatures?
A: No, this calculator is specifically for 25°C. Density changes with temperature according to the ideal gas law.

Q3: How accurate is this calculation?
A: It's accurate for ideal gas behavior. For high pressures, real gas corrections might be needed.

Q4: Why 0.028 kg/mol for nitrogen?
A: This is the molar mass of N₂ gas (28 g/mol converted to kg/mol).

Q5: What units should I use for pressure?
A: The calculator requires Pascals (Pa). 1 atm = 101325 Pa, 1 bar = 100000 Pa.