In order to convert our data from ∆T/gram to ∆T/mole, we need to find the molar mass of each compound. Then we can convert each ionic compound's mass from grams to moles. Finally, we would need to take our calculated temperature change and divide that by our moles, but that is so much work. What if we could make CODAP do some of that for us?

1. As before, the platform is below these instructions. The sodium chloride example has been expanded to include molar mass, moles, and ∆T/mole.
2. Calculate the molar mass for each ionic compound and enter it in the platform below.
3. CODAP can now calculate moles for you if you provide it with the correct formula. Hold the cursor over moles as seen in the gif at right and click on Edit Formula. Use the asterisk (*) for multiplication and the slash (/) for division.
4. Click Apply to close the formula editor. You should see values appear in the moles column.
5. Now follow the same procedure to calculate values for the ∆T/mole column. Again to better visualize the data, we can make a graph.
6. Drag the Ionic Compound variable to the x-axis of the plot.
7. Drag the ∆T/mole variable to the y-axis of the plot.
8. Observe the resulting plot. Then answer the questions below the CODAP workbench.