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Balancing Equations
Types of Chemical Rxn
Mole-Mole Stoichiometry
All Units Stoichiometry
Miscellaneous
100

Fe(OH)3 -> Fe2O3 + H2O

2Fe(OH)3 -> Fe2O3 + 3H2O

100

2Na + S -> Na2S

Synthesis 
100
2Buns + 1Burger + 1Cheese + 3Veggies -> 1Cheeseburger


How many cheeseburgers can you make with 16 veggies?

5 cheeseburgers!
100

Zn + 2HCl -> ZnCl2 + H2


How many moles of ZnCl2 will be produced from 61.0g of Zn, assuming HCl is available in excess?

.933 moles of ZnCl2

100
What is Mrs. Smith's favorite number?
4
200

Si + S8 -> Si2S4

4Si + S8 -> 2Si2S4

200

NaCl +AgNO3 -> AgCl + NaNO3

Double Replacement
200

2H2 + O2 -> 2H2O


How many moles of O2 is needed to react fully with .5 moles of H2?

.25 moles of O2

200

B2H6 + 3O2 -> 2HBO2 + 2H2O

What mass of O2 will be needed to burn 36.1 g of B2H6?

125g of O2

200
When is your firework (MgO) lab report due?
Today by 11:59pm on Google classroom!
300

Cu +CO2 + O2 + H2O -> CuCO3 + Cu(OH)2

2Cu +CO2 + O2 + H2O -> CuCO3 + Cu(OH)2

300

2Pb(NO3)2 -> 2Pb + 4NO3

Decomposition
300

2S + 3O2 -> 2SO3

If you have 1.75 moles of SO3, how many moles of O2 was consumed?

2.625 moles of O2

300

2Na2S2O3 + AgBr -> NaBr + Na3[Ag(S2O3)2] 

How many moles of Na2S2O3 are needed to react completely with 1.75x1025 molecules of AgBr?

58.14moles of Na2S2O3

300
Draw the following lewis dot structure. What is its shape? Is it polar?


CHOCl

Trigonal planar and yes, it is polar.
400

Al + FeO -> Al2O3 + Fe

2Al + 3FeO -> Al2O3 + 3Fe

400

CH4 + 2O2 -> CO2 + 2H2O

Combustion!
400

Fe2O3 + 3H2 -> 2Fe + 3H20


If you react 25 moles of Fe2O3 with excess H2, how many moles of iron are produced?

50 moles of Fe
400

2H2S + O2 -> 2H2O + 2S


If 5.0L of gaseous H2S reacts with excess O2, how many atoms of S is produced?

1.34x1023 atoms of S

400

A compound has an empirical formula of C2H4O ad a molecular mass of 176 g/mol, what is the molecular formula?



C8H16O4

500

C7H6O2 + O2 -> CO2 +H2O

2C7H6O2 + 15O2 -> 14CO2 +6H2O

500

BaCl2 + Na2SO4 -> BaSO4 + 2NaCl

Double Replacement 
500

3Cu + 8HNO3 -> 3Cu(NO3)2 + 2NO + H2O

How many moles of HNO3 are needed to react with 2.56 moles of copper?

6.827 moles of Cu
500

AgNO3 + HI -> AgI + HNO3


When 50.0 mL of AgNO3 is treated with excess amounts HI gas, what is the mass (in kg) of AgI produced?

.0005kg of AgI
500

What is the percent oxygen in aluminum sulfate?

56.1% Oxygen in Al2(SO4)3