POGIL – The Mole
Name ______
Critical Thinking Questions:
1. a. How many elephants are there in a dozen elephants?
b. Which has more animals – a dozen elephants or a dozen chickens?
c. How many elephants are there in a gross of elephants?
d. Which has more animals – a gross of elephants or a gross of chickens?
e. How many elephants are there in a mole of elephants?
f. Which has more animals – a mole of elephants or a mole of chickens?
g. Which has more atoms – a dozen H atoms or a dozen Ar atoms?
h. Which has more atoms – a mole of H atoms or a mole of Ar atoms?
2. a. How many atoms are in 1.008 grams of hydrogen?
b. How many atoms are in 12.011 grams of carbon?
c. How many atoms are in 22.989 grams of sodium?
d. How many atoms are in 63.55 grams of copper?
3. a. What is the mass of 1 mole of Br atoms?
b. What is the mass of 1 mole of Ag atoms?
c. What is the mass of 1 mole of Ca atoms?
4. Why have scientists chosen to give the number 6.022 x 1023 a name?
5. Which has more atoms: 1.008 g of hydrogen or 39.95 g of argon?
Exercises:
6. What is the mass, in grams, of 5.000 moles of carbon atoms?
7. What is the average mass, in grams, of a) one helium atom? b) one potassium atom?
8. How many sodium atoms are there in 6.00 moles of sodium?
9. a)How many moles of sodium atoms are there in 100.0 g of sodium? b)How many sodium atoms are there in 100.0 g of sodium ?
11. Calculate the number of moles in 50.7 grams of hydrogen.
12. Calculate the number of moles in 1.2 grams of cobalt.
13. Calculate the number of atoms in 35 g of carbon.
14. Calculate the number of atoms in 75 g of bromine.