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Convert these two atomic units (a.u.) into kJ/mol by using 2625 kJ/mol = 1 a.u. -78.7939 kJ/mol -78.7838378 kJ/mol Please show the work.

Answer :

The atomic units needed to convert from KJ/mol to au are -0.0300167 and -0.0300128906 respectively. Using 2625 kJ/mol = 1 a.u. They are so called because of the atomic changes.

The Hartree atomic units are a system of natural units of measurement that is particularly useful for calculations in computational chemistry and atomic physics. They bear the physicist Douglas Hartree's name. An indicator of an element's atomic mass is the atomic mass unit (AMU or amu). also referred to as the unified atomic mass unit or the dalton (Da) (u), 1 KJ/mol Equals (1/2625) of a.u. or 2625 KJ/mol = 1 a.u.

So,

-78.7939 KJ/mol is equal to (-78.7939/2625) a.u., or -0.0300167 a.u ( upto 6 significant figures )

The conversion factor is (-78.7838378/2625) a.u = -0.0300128906 a.u (upto 9 significant figures).

Learn more about atomic units here

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