It’s c I believe because it says 209 years to complete an orbit so hint yourself ?.....
Answer:
yeah,The oxidation state of an atom does not represent the "real" charge on that atom, or any other actual atomic property.Hydrogen has OS = +1, but adopts −1 when bonded as a hydride to metals or metalloids. Oxygen in compounds has OS = −2. This set of postulates covers .
Explanation:
Answer:

Explanation:
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In this case, according to the given information of the solubility of copper chloride, as the maximum amount of this salt one can dissolve without having a precipitate, we infer that since just 73 grams are actually dissolved, the following amount will remain solid as a precipitate:

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It is a column of elements in the periodic table of the chemical elements.
Answer:
they have the same molar solubility at 44.5 degrees celsius