Question

Jenny wanted to make 3 molecules of a substance made with aluminum and oxygen. How many aluminum and oxygen atoms will she need? A) 1 aluminum; 1 oxygen B) 2 aluminum; 3 oxygen C) 3 aluminum; 6 oxygen D) 6 aluminum; 9 oxygen


This my 3rd question of the day.... sadly.

Answer 1

The correct answer is: Option (D) 6 aluminum and 9 oxygen!

Explanation:
Since the one molecule of aluminium and oxygen is Al2O3 (Aluminum oxide). It has 3 oxygen atoms and 2 aluminium atoms. It find the atoms for the 3 molecules, multiply them with 3.

3 * 3 oxygen atoms = 9 oxygen
3 * 2 aluminum atoms = 6 aluminum ( Option D)

Answer 2

The answer is D) 6 aluminum; 9 oxygen

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