Moles Review
1 mole = __22.4_____L at standard _Temperature__ = ____O_ C and standard ____Pressure_______ = __1____ atm
1 mole = __molar___ mass. __grams__ is the unit used with mass. Molar Mass is found on the __Periodic table
1 mole = __6.02 x 1023_______ particles. This number is so large because it is describing items that are so very
_small________. These items include _atoms___, ___molecules______ - a covalently bonded compound, and
____formula units - an ionically bonded compound.
1. Find the gram formula mass for Sucrose C6H12O6.
C = 6 x 12.01 = 72.06
H = 12 x 1.01 = 12.12
O = 6 x 16 =
96.00
180.18 g/mole
2. Find the gram formula mass for Aluminum sulfate Al2(SO4)3
Al = 2 x 26.98 = 53.96
S = 3 x 32.07 = 96.21
O = 12 x 16 = 192.00
342.17 g/mole
3. How many atoms are in 3.6 moles of Carbon?
3.6 mole 6.02 x 1023 = 2.17 x 1024 moles
1 mole
4. How moles are in 166.3L of Oxygen gas?
166.3 L
1 mole
22.4 L
= 7.42 mole
5. How many molecules are in 32.8 grams of Salt (NaCl)?
32.8 g NaCl
1 mole
6.02 x 1023 molecules
58.45 g
1 mole
= 3.38 x 1023 molecules
6. How many Liters in 8.2 grams of hydrogen gas (at STP)?
8. 2 g H2
1 mole
22.4 L = 90.93 L H2
2.02 g
1 mole
7. How many grams are 3.82 x 1042 formula units of Aluminum sulfate Al2(SO4)3? Al = 2 x 26.98 = 53.96
3.82 x 1042
1 mole 342.17g = 2.17 x 1021 g
S = 3 x 32.07 = 96.21
23
6.02 x 10 1 mole
O = 12 x 16.00 = 192.00
342.17
8. How many moles in 48.2 grams of carbon?
48.2 g 1mole = 4.01 mole
12.01 g