(BadTextbooks) Slide-18  <Next>  AFTER you have studied THIS Slide)
Avogadro Equation
Avogadro FAMOUSLY said (correctly):
"A volume of gas has a number, N, of molecules."
mole (in SI-Units)MKSetc...
    1) Avogadro constant, N (N x 1023)mole/(=Dalton/Gram).
<==should be: "Dalton/Kilogram)!!
THEN(!!):
N (N x 1026)kilomole/(=Dalton/kilogram).<=OK

mole (in CGSetc (units):
    1a) Avogadro constant, N (N x 1023)mole/(=Dalton/Gram).
        o More SENSIBLE: N (N x 1023 DaltonS/Gram);(1-dalton=carbon12/12).

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NIST (National Institute of Science and Technology)...
Had: N (N x 1023)mole (BIG ERROR, in MKSetcUnits)(!!)...
.