# What does a Hartree measure?

## What does a Hartree measure?

In Hartree atomic units, the speed of light is approximately 137.036 atomic units of velocity. Atomic units are often abbreviated “a.u.” or “au”, not to be confused with the same abbreviation used also for astronomical units, arbitrary units, and absorbance units in other contexts.

## How do you convert J to kcal mol?

ENDMEMO

1. 1 J/mol = 0.000238846 kcal/mol. 2 J/mol =
2. 3 J/mol = 0.000716538 kcal/mol. 4 J/mol =
3. 5 J/mol = 0.00119423 kcal/mol. 6 J/mol =
4. 7 J/mol = 0.001671922 kcal/mol. 8 J/mol =
5. 9 J/mol = 0.002149614 kcal/mol. 10 J/mol =
6. 11 J/mol = 0.002627306 kcal/mol. 12 J/mol =
7. 13 J/mol = 0.003104998 kcal/mol.
8. 15 J/mol = 0.00358269 kcal/mol.

How do you convert AU to KCAL?

1 au = 1.0420038240918E-21 kcal….ENERGY Units Conversion. atomic-unit-of-energy to kilocalories.

Atomic Unit Of Energy to Kilocalories (table conversion)
400 au = 4.1680152963671E-19 kcal

How do you convert kcal to kJ mol?

In SI units, one kilocalorie per mole is equal to 4.184 kilojoules per mole, or 6.9477×10−21 joules per molecule, or 0.043 eV per molecule. At room temperature (25 °C, 77 °F, or 298.15 K) it is equal to 1.688 units in the kT term of Boltzmann’s equation.

### How much energy does Joule convert to Hartree energy?

Hartree energy to Joule (J) Converter Calculator. 1 Hartree energy = 4.359748199E-18 joule

### How to convert a kcal to a Hartree?

You can do the reverse unit conversion from kcal to hartree, or enter any two units below: The Hartree energy (symbol Eh) is a physical constant used as atomic unit of energy, named after physicist Douglas Hartree. ConvertUnits.com provides an online conversion calculator for all types of measurement units.

Which is greater a Joule or a kcal?

We assume you are converting between hartree and kilocalorie [15 °C]. You can view more details on each measurement unit: hartree or kcal The SI derived unit for energy is the joule. 1 joule is equal to 2.2937104486906E+17 hartree, or 0.00023890295761862 kcal.

How to convert kilocalorie to energy in SI units?

We assume you are converting between hartree and kilocalorie [15 °C]. The SI derived unit for energy is the joule. 1 joule is equal to 2.2937104486906E+17 hartree, or 0.00023890295761862 kcal. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between hartrees and kilocalories.