The Mighty Mole
In chemistry the mole is a way of keeping track of a large group of particles and also a way of determining the amount of matter in a substance. The mole can be thought of in much the same way as the dozen. A dozen eggs is 12 eggs, a dozen cars is 12 cars, and a dozen of any kind of object is 12 of that object. A mole is a number equal to 6.02 x 10^23 particles. So a mole of pickles would have 6.02 x 10^23 pickles in it.
As you can see, the mole is not a unit we would use in counting everday objects; however, it is well suited for counting atoms and molecules because there may be trillions and trillions of them in a very small sample.
Note: The symbol ^ indicates a superscript.
Journal Entry #18
Answer the following. Show your work.
a. How many moles of atoms are in 4.04 x 10^24 atoms?
b. How many atoms are in 3.20 moles of atoms?
c. How many moles of carbon atoms are in 1.75 x 10^25 carbon atoms?
Meet Burrow D. Mole!