Density of Oxygen Gas (O₂) in kg/m³

Oxygen Gas Density Formula:

\[ \rho = \frac{P \times M}{R \times T} \]

Oxygen Density (ρ): kg/m³

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1. What is Oxygen Gas Density?

Definition: This calculator determines the density of oxygen gas (O₂) using the ideal gas law, given pressure and temperature.

Purpose: It helps scientists, engineers, and students calculate oxygen density for various applications in chemistry, physics, and engineering.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ \rho = \frac{P \times M}{R \times T} \]

Where:

\( \rho \) — Density of oxygen gas (kg/m³)
\( P \) — Pressure (Pascals)
\( M \) — Molar mass of O₂ (0.032 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 Oxygen Density Calculation

Details: Knowing oxygen density is crucial for chemical processes, respiratory systems, combustion calculations, and various industrial applications.

4. Using the Calculator

Tips: Enter the pressure in Pascals and temperature in Kelvin. Standard conditions are 101325 Pa and 273.15 K (0°C). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is molar mass fixed at 0.032 kg/mol?
A: This is the molar mass of diatomic oxygen (O₂), which consists of two oxygen atoms (16 g/mol each).

Q2: What's the gas constant value?
A: We use 8.314 J/(mol·K), the universal gas constant in SI units.

Q3: How does temperature affect oxygen density?
A: Density decreases as temperature increases (inverse relationship), assuming constant pressure.

Q4: How does pressure affect oxygen density?
A: Density increases linearly with increasing pressure at constant temperature.

Q5: Is this valid for all conditions?
A: This uses the ideal gas law, which works well for oxygen at moderate pressures and temperatures above its critical point.