Mole Conversion Notes
Step 1: Begin by listing your known and unknown. Decide which conversion factor you should use
based on what the problem is asking you to find.
Step 2: Make a T-chart, and put whatever information the problem gave you in the top left. After
that, put the units of whatever you were given in the bottom right of the T, and the units of what
you want to find in the top right.
In this case, the problem gave you "22 grams of copper" as the starting information. Because this is
what you were given, put "22 grams of copper" in the top left of the T. Since "grams of copper" is
the unit of what you were given, put this in the bottom right of the T. Since you want to find out how
many moles of copper are going to be made, put "moles of copper" as your unit in the top right.
When you've done this, your calculation should look like this:
Step 2: Put the conversion factors into the T-chart in front of the units on the right.
Using the map, the conversion factor between grams and moles is the atomic mass of copper.
Because we measure atomic mass in grams, you need to put the atomic mass in front of the unit
"grams of copper". What do you put in front of moles? Whenever you do a calculation of this kind,
you need to put "1" in front of moles, like you see here:
