CL
Chlorine<span>
</span>You wiil find in periodic table :)
Ether<span> has two Carbons (single) bonded to an Oxygen atom. An </span>Ester<span>has a double Oxygen bond with a Carbon atom</span>
From erosion i think good luck :D
Equilibrium is achieved when the reaction rate of the forward and backward reaction are equal or the concentrations of the reactants and the products are in an unchanging ratio. Specifically, this system is in a dynamic equilibrium.