D. The subscript 2 indicates that two atoms of aluminum are present in the substance.
<u>Explanation:</u>
Actually, the formula of alumina is Al₂O₃
The subscript 2 tells us that there are 2 Al (Aluminum) atoms, and the subscript 3 says that there are 3 oxygen atoms, so D is the accurate statement.
Choice A is wrong as 3 is not the coefficient, and it is a subscript.
Choice B is wrong since the subscript 2 meant for the aluminium atoms, and not the oxygen atoms.
Finally, choice C is also wrong since the symbol Al refers to the metal aluminium, and not the oxygen.
The actual classification is very difficult.
<span>Strong is very open ended. You can be physically strong, but morally corrupt. </span>
<span>Capable suggests a skill that is above adequate. You can be a warrior that is capable but he couldn't add two single digit numbers together. </span>
<span>Mighty has the same problem. </span>
<span>I would pick </span><span>capable, strong, and mighty </span>
Sentence:
<h3>Judy and her dog run on the beach every morning.</h3>
Hope this helps
<h2>--SirGerick--</h2>
Ask me if you need me to answer your question!
"An" is one of two indefinite articles.
explaining why or how about your topic or saying goodbye to everybody I hope to see you soon.
