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How to sign: the 8th letter of the Roman alphabet
How to sign: a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe
Similiar / Same: hydrogen
Within this category: tritium
How to sign: (thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure
"enthalpy is the amount of energy in a system capable of doing mechanical work";
Categories: physical property