The Mole
What is the mole?
a unit for counting atoms/molecules
The unit for molar mass
grams/mol (g/mol)
C4H8 + O2 --> CO2 + H2O
combustion reaction
Find the molar mass of CH3COOH
60 g/mol
How many moles of water are equal to 6.02 x 1023 molecules ?
1
how many atoms are in a mole?
Avogadro's number OR 6.022 x 1023
who wrote the novel "To Kill a Mockingbird"?
Answer: Harper Lee
Na + Cl --> NaCl
synthesis
Find the molar mass of UF6
352 g/mol
Convert 3.01 x 1023 molecules of C2H6 to moles
0.5 moles
What is the abbreviation for the mole?
mol
Where should you look to find the molar mass of any element?
periodic table
What is the capital city of Canada?
Answer: Ottawa
Find the molar mass of H3PO4
97
How many moles of glucose does 1.2 x 1024 molecules represent?
1.99 mol
What is the smallest planet in our solar system?
Answer: Mercury
how do we find the molar mass for a MOLECULE/COMPOUND?
add together the molar mass for every ATOM in the compound
NaCl --> Na + Cl
decomposition
Find the molar mass of Ga2(SO3)3
332 g/mol
How many atoms does 2.0 moles of He represent?
1.2044 x 1024 atoms
How many atoms are in a mole?
6.02 x 1023 atoms
What is the world's largest desert by area?
Answer: The Sahara Desert
K2S + O2 --> KO + S
single replacement
Find the molar mass of Pb(NO3)2
331 g/mol
How many molecules are in 3.0 moles of NaCl?
1.8066 x 1024 atoms
Who "invented" the mole?
Avogadro, that's why it's called Avogadro's number
What is the molar mass of Glucose (C6H12O6)
180 grams
LiBr + MgO2 --> MgBr2 +LiO
double replacement
Find the molar mass of (NH4)2SO4
130 g/mol
How many molecules are in 0.25 moles of CH4?
1.5055 x 1023 atoms