Examlex
Permeability is the term that refers to how much open space is in a body of rock.
Reactant Concentration
The amount of reactants present in a given volume of solution at the start of a chemical reaction, influencing the reaction rate.
First-order Reaction
A chemical reaction whose rate is directly proportional to the concentration of a single reactant.
Half-life
The time required for a quantity to reduce to half its initial value, often used to describe the rate of decay of radioactive substances.
Drug Concentration
The amount of a drug present in a given volume of fluid, often measured in terms of mass per unit volume.
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