What to do
- Pick a solute. Set the moles (or grams) and the volume.
- Press Fill to Mark. Read the molarity.
- Record the molarity for each row. Check one by hand.
Controls
Try these rows:
Data table
| Solute amount | Final volume | Molarity |
|---|
Copy your table onto your worksheet. No device? Use the Data Card on the Teacher Prep page. Fill in the table from the card, then answer the questions.
Check yourself
What happens to the molarity if you double the moles and keep the volume the same?
It doubles.
What happens if you double the volume and keep the moles the same?
It is cut in half.
Why must you fill to the mark instead of adding a set amount of water?
Molarity uses the final volume of the solution, not the volume of water.
Try each question first. Then tap it to check.