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Period
Date
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Worksheet on Dozens and Moles
Part E. The following are masses of one dozen game balls
Type of Ball
Ping pong
Golf
Bowling
Mass of one dozen
O.241b (110 g)
1.441b (654 g)
192 Ib (87.2 kg)
1. How many times more ma~sive is a bowling ball than a ping pong ball?
2. How many times more massive is a golf ball than a ping pong ball?
3. How much does
OIle
ping pong ball weigh in pounds? In ounceB?
4. How much does one golf ball weigh in pounds? In ounces?
5. You have 0.040 lb (18 g) ofping pong balls. How many pounds ofbowling
balls must you obtain to have the same nurnber of each type of ball?
6. How many dozen golf balls are present in 180 golf balls?
How much would these golf balls weigh in pounds?
7. If you had 48 pounds of bowling balls, how many bowIi ng balls would you
have?
8. You must ship 20,000 golfbaUs. You do not have time to count them. It
is faster to weigh them. How many pounds of golf balls must you flhip?
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The Mole (MOLE)
ConceptlSkillsDevelopment
Part!!
Look up the atomic masses for helium, carbon, and gold to answer the
following questions.
Element
Mass of one mole
Helium
Carbon
Gold
1. How many times more massive is a gold atom than a helium atom?
2. What is the average mass of one helium atom in gTams?
What i~ its mass in atomic mass units (u)? (1 u = 1.66.x 10'-24 g)
3. What is the average mass (in grams) of one'carbon atom?
In atomic mass units?
4, You have 0.50 g ofhelium atoms. How many grams ofgold atoms must
you obtain to have the same number of atoms of each?
5. How many moles of carbon atoms are there in 3.01 x 1024 atoms of
carbon?
How many grams of carbon is this?
6. If you have 25 g of gold, how many atoms of gold do you have?
7. How many grams of gold would you have to obtain to have 3.01 x 1019
atoms of gold?
The Mole (MOLE)
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