This effectively conflates the 2 inside the constant, k, whose numerical meaning then becomes different.

If it is true, for some constant k 0, that:

The constant k is called the level of the theory.

Then for some constant "k", and if this relationship were exactly true, the species area line would be straight on log scales.

The constant K is proportional to the atomic number of the target element.

The value of constant K depends on temperature and is called partition coefficient.

The constant k is typically close to unity and ranges from 0.8 to 1.39.

This is accounted for by the addition of a dimensionless constant K, which also incorporates the factor 3 above.

The constant K measures the intensity of the kicks on the kicked rotator.