Mole Ratios
You have just learned how to complete mole ratios and use mole ratios to determine the mole amount of elements given a particular mass of a compound. In this activity, use ratios and dimensional analysis to provide answers to the questions below. Make sure to completely answer each question and show all of your work.
This activity is available below or in a printable version.
- Write all possible mole ratios for the reaction: 2Al2O3 → 4Al + 3O2. There are a total of six different ratios, including reciprocals. Make sure each ratio has the correct coefficient and unit of “moles”.
Use the ratios you developed in problem #1 to complete the calculations below. Make sure to show all units, conversion factors, and the correct number of significant figures.
- How many moles of aluminum oxide are needed to produce 19.0 moles of oxygen?
- How many moles of oxygen can be produced from 19.0 moles of aluminum oxide?
- In order to produce 25.0 moles of aluminum, how many moles of aluminum oxide are required?
- How many moles of aluminum oxide are required to produce 97.0 moles of aluminum?
Once you have completed the mole conversions using dimensional analysis, please submit your work to the dropbox.