Answer:
A.
Explanation:
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C. Distance from Earth
The observed brightness of a star (the apparent magnitude) to an absolute magnitude, you need to know the distance [d], to the star. Alternatively, if we know the distance and the apparent magnitude [m] of a star, we can calculate its absolute magnitude [d].
*paraphrased from "COSMOS.com"
The answer is <span>a total of eight valence electrons
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Answer:
During chemical reactions, matter is neither
created nor destroyed; it just changes form.
Explanation:
