1. What is Density of Hydrogen Gas?

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

Purpose: It helps scientists and engineers 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/mL
• \( \rho_{kg/m^3} \) — Density in kg/m³

Explanation: The conversion factor of 1000 comes from the relationship between kg/m³ and g/mL (1 kg/m³ = 0.001 g/mL).

3. Importance of Hydrogen Gas Density

Details: Hydrogen has a very low density (~8.99 × 10⁻⁵ g/mL at STP), which is important for applications like fuel cells, hydrogen storage, and gas calculations.

4. Using the Calculator

Tips: Enter the density in kg/m³ (default value 0.0899 kg/m³ for hydrogen at STP). The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the density of hydrogen gas at STP?
A: At standard temperature and pressure (STP), hydrogen gas has a density of approximately 0.0899 kg/m³ or 8.99 × 10⁻⁵ g/mL.

Q2: Why is hydrogen's density so low?
A: Hydrogen is the lightest element, with just one proton and one electron, resulting in very low density.

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 common uses for hydrogen density calculations?
A: Used in fuel cell design, hydrogen storage systems, buoyancy calculations, and various 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).