Answer:
Explanation: possible oxidation numbers of Au are +I and +III
Au2O3 ⇒ 2 Au + 3 O2
In chemistry, a valence electron is an outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.
freezing and condensation
Explanation:
The motion of the atoms decreases during freezing and condensation. These are phase changes that increases the molecular attraction between particles and forces them to come closer.
Freezing is a phase change from liquid to solid. It is usually achieved by removing heat from a substance and cooling it.
Condensation is a phase change from gases to liquid. .
Gases have the greatest motion because they have little to no attractive forces between them.
Phase changes from gas to solid to liquid generally reduces the motion of the atoms.
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Phase change brainly.com/question/1875234
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Molarity : It is defined as the number of moles of solute present in one liter of solution.
Therefore, the molarity of solution is 3.33