Some are essentially instantaneous, while others may take years to reach equilibrium. The Reaction Rate for a given chemical reaction is the measure of the change in concentration of the reactants or the change in concentration of the products per unit time.
One of the diseases is smallpox and the second is rinderpest
Volcano experiment
Volcano lavatory
Volcano extravaganza
Volcano blow thrash
A. Chemical energy can be in many forms including in the chemicals found in food