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Placing a thin layer of zinc on a ferrous material to protect the underlying surface from corrosion.

 

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How to keep flowers in a vase for long time

The best gift for a woman, as you know, is a beautiful bouquet of flowers. But the cut flowers at home quite quickly wither. But your favorite roses or tulips can keep their freshness if you use our advice. Chemistry and various chemical elements will help us in this difficult matter!

Moderator

A substance such as hydrogen, deuterium, oxygen or paraffin capable of slowing fast nuetrons upon collision.

Stoichiometry

Description of the quantitative relationships among elements and compounds as they undergo chemical changes.

Standard Entropy

The absolute entropy of a substance in its standard state at 298 K.

DP number

The degree of polymerization, the average number of monomer units per polymer unit.

Central Atom

An atom in a molecule or polyatomic ion that is bonded to more than one other atom.

Ion Product for Water

Equilibrium constant for the ionization of water, Kw = [H3O+][OH-] =1.00 x 10-14 at 25 °C.

Paramagnetism

Attraction toward a magnetic field, stronger than diamagnetism, but still weak compared to ferromagnetism.

Emulsion

Colloidal suspension of a liquid in a liquid.

Colloid

A heterogeneous mixture in which solute-like particles do not settle out.