Is hydrogen gas more or less dense than air?

Answer Air, at 0.00128 grams per milliliter, is more dense than hydrogen gas, at 0.000089 grams per milliliter, according to Charles Ophardt of Elmhurst College. Hydrogen can also easily escape Earth's a... Read More »

Top Q&A For: Is hydrogen gas more or less dense than air

How dense is hydrogen?

Hydrogen is the least dense of gases, with a density of 0.0988 kg/m3 at 0 degrees C and a pressure of 101.325 kPa. By comparison, air has a density of 1.2929 kg/m3 under these conditions. Hydrogen ... Read More »

Is hydrogen more dense than water?

Water is denser than hydrogen. The density of water at room temperature is 1 gram per milliliter, or 1,000 kilograms per cubic meter. Ice is a little less dense, at .92 grams per milliliter, or 920... Read More »

Where does sound travel fastest - dense or less dense air?

Because sound travels by vibration of matter, the density of the medium through which it is traveling will affect its speed. The denser the molecules, the faster it will travel. So sound will trave... Read More »

What is the pressure of a hydrogen storage supply tank for a hydrogen fuel cell?

Current fuel cells typically store hydrogen gas at 5,000 pounds per square inch (psi) of pressure. State-of-the-art tanks with a 10,000 psi capacity are in development. Cryogenic storage of liquid... Read More »