Tonnes of coal equivalent to Hartrees calculator

Tonnes of coal equivalent to Hartrees Conversion Table

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• Tonnes of coal equivalent (29,307,600,000 J)

  The ton of coal equivalent is the energy that is product of burning one metric ton (or tonne) of coal. The metric ton (or tonne) is a unit of mass equal to 1,000 kilograms or 2,204.6 pounds.

• Hartree (0.0000000000000000043 J)

  The hartree (symbol: Eh or Ha), also known as the Hartree energy, is the atomic unit of energy, named after the British physicist Douglas Hartree. It is defined as 2R∞hc, where R∞ is the Rydberg constant, h is the Planck constant and c is the speed of light. The 2014 CODATA recommended value is Eh = 4.359 744 650(54)×10−18 J = 27.211 386 02(17) eV. The hartree energy is approximately the electric potential energy of the hydrogen atom in its ground state and, by the virial theorem, approximately twice its ionization energy; the relationships are not exact because of the finite mass of the nucleus of the hydrogen atom and relativistic corrections. The hartree is usually used as a unit of energy in atomic physics and computational chemistry: for experimental measurements at the atomic scale, the electronvolt (eV) or the reciprocal centimetre (cm−1) are much more widely used.