2.20x1025atoms is the correct answer
Answer:
The iron is in the +3 oxidation state, which is what the III means.
Answer:
Option b.) Potassium ion, is written correctly.
Explanation:
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A.helium<span>Hydrogen is the most abundant element in the Universe; helium is second. However, after this, the rank of abundance does not continue to correspond to the atomic number; oxygen has abundance rank 3, but atomic number 8.</span>
A.water.
An aqueous solution is a solution in water.
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