Hydrogen is a chemical element; it has the symbol H and atomic number 1. It is the lightest and most abundant chemical element in the universe, constituting about 75% of all normal matter.

Oct 17, 2014 · Online calculator, figures and tables showing density and specific weight of hydrogen, H2, at temperatures ranging from -260 to 325 °C (-435 to 620 °F) at atmospheric …

Enter numbers in boxes below for conversion values.

Hydrogen weighs 0.000082 gram per cubic centimeter or 0.082 kilogram per cubic meter, i.e. density of hydrogen is equal to 0.082 kg/m³; at 0°C (32°F or 273.15K) at standard atmospheric …

Hydrogen Formula: H 2 Molecular weight: 2.01588 IUPAC Standard InChI: InChI=1S/H2/h1H Copy

Sep 21, 2025 · Hydrogen has a density of 0. 082 kg/m³ at 0°C and standard atmospheric pressure. As the lightest and most abundant element in the universe, it constitutes about 75% …

May 20, 2025 · In kilograms, the mass of a hydrogen atom is 1.67 times 10 to the power of negative 27 or 1.67 x 10-24 grams. That conversion is based on one atomic measurement unit …

Nov 21, 2020 · Atomic mass of Hydrogen is 1.0079 u. The atomic mass is the mass of an atom. The atomic mass or relative isotopic mass refers to the mass of a single particle, and therefore …

With an atomic weight of 1.00794 u, hydrogen is the lightest element on the periodic table. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting …

Hydrogen (H) Hydrogen is the 1st element in the periodic table and has a symbol of H and atomic number of 1. It has an atomic weight of 1.008 and a mass number of 1. Hydrogen has one …