Mole Worksheet 1 moles ↔ particles The mole is simply a number equal to 602 000 000 000 000 000 000 000 or 6 02 x 1023 How large is a mole Well if you had a mole

							                            Mole Worksheet #1: moles ↔ particles

The mole is simply a number equal to 602,000,000,000,000,000,000,000 or 6.02 x 1023. How large is a mole??
Well, if you had a mole of pennies, you would have enough money to pay all the expenses of the United States for
the next billion years. A mole of large marshmallows would cover the United States to a depth of more than 600
miles.
Questions
1. A mole is “counting number”. The following are also counting numbers. What numbers do each of the
 following terms represent?
 dozen_________________        gross_______________            pair________________________
 mole________________          score ______________            ream (of paper)_______________

2. List the four types of “representative particles” that are referred to in your textbook?



3. Determine the number of representative particles in each of the following. Show factor label method.
   A. 0.250 mol silver

   B. 8.56 x 10-3 mol NaCl

   C. 35.4 mol CO2

   D. 0.425 mol N2

4. Determine the number of moles in each of the following. Show factor label method.
   A. 3.25 x 1020 atoms Pb

   B. 4.96 x 1024 molecules glucose

   C. 1.56 x 1023 formula units NaOH

   D. 1.25 x 1025 Cu2+ ions

5. Make the following conversions. Show factor label method.

    A. 1.51 x 1015 atoms Si to mol Si

   B. 4.25 x 10-2 mol NO2 to molecules NO2

   C. 8.95 x 1025 molecules CCl4 to mol CCl4

   D. 5.90 mol Ca to atoms Ca