Aluminum Oxide Experiment

Question

If the experiment was used on 0.95g aluminum, what mass of aluminum oxide would be theoretically produced?

Answer 1

Hello, Anna,

First, recognize that aluminum oxide's formula is Al₂O₃. Set up a balanced chemical equation. You'll see that for every 4 moles of Al you get 2 moles of Al₂O₃.

Then determine the number of moles of Al and if that completely reacts, you wind up with half that number of moles for Al₂O₃. The, covert that back into grams of Al₂O₃. There are only two sig figs here, so the final answer would be 1.8g of Al₂O₃.

I hope this helps,

Bob