1. What is Hydrogen Gas Density?

Definition: This calculator converts the density of hydrogen gas from kg/m³ to g/cm³.

Purpose: It helps scientists, engineers, and students work with hydrogen gas density in different unit systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \rho \) — Density in g/cm³
• \( \rho_{kg/m³} \) — Density in kg/m³

Explanation: Since 1 kg/m³ equals 0.001 g/cm³, we divide the kg/m³ value by 1000 to get the density in g/cm³.

3. Importance of Hydrogen Density

Details: Hydrogen is the lightest element with a density of ~0.0899 kg/m³ (0.0000899 g/cm³) at STP. Understanding its density is crucial for storage, transportation, and industrial applications.

4. Using the Calculator

Tips: Enter the hydrogen density in kg/m³ (default value 0.0899 kg/m³ for STP). The calculator will provide the equivalent density in g/cm³.

5. Frequently Asked Questions (FAQ)

Q1: What is the density of hydrogen at STP?
A: At standard temperature and pressure (STP), hydrogen gas has a density of approximately 0.0899 kg/m³ or 0.0000899 g/cm³.

Q2: Why is hydrogen's density so low?
A: Hydrogen is the lightest element with an atomic mass of just 1.008 u, resulting in very low density as a gas.

Q3: How does temperature affect hydrogen density?
A: Density decreases with increasing temperature (at constant pressure) according to the ideal gas law.

Q4: What are typical applications needing hydrogen density calculations?
A: Fuel cell design, hydrogen storage systems, buoyancy calculations, and industrial processes.

Q5: How does hydrogen density compare to air?
A: Hydrogen is about 14 times less dense than air (air ≈ 1.225 kg/m³ at STP).