1. Not dependent on or relative to anything else, e.g. absolute zero. 2. Denoting a temperature measured on an absolute scale, a scale of temperature based on absolute zero. The usual absolute scale now is that of thermodynamic temperature; its unit, the kelvin, was formerly called the degree absolute (0A) and is the same size
A method of calculating atomic and molecular structure directly from the first principles of quantum mechanics, without using quantities derived from experiment (such as ionization energies found by spectroscopy) as parameters. Ab-initio calculations require a large amount of numerical computation; the amount of computing time required increases rapidly as the size of the atom or molecule
Solubility product: The product of concentrations of ions in saturated solution of an electrolyte at a given temperature is constant and is known as solubility product. For silver chloride, the equilibrium is formulated as follows. Undissolved salt ⇋ ions in solution AgCl(s) = Ag+(aq)+ Cl (aq) K = [Ag+][Cl–]/[AgCl] The concentration of the undissolved salt