Steps of Stoichiometry
When we are using step #3. What conversion factor are we using?
Molar Mass
What is the molar mass of Sb?
121.76 g/mol Sb
Balance the following equation
Na + O2. --> Na2O
4Na + O2 --> 2Na2O
What is the definition of a limiting reactant?
A reactant that is used up first in a chemical reaction.
What is the 1st step of stoichiometry.
Find the Known and Unknown.
What is the molar mass of Na3PO4?
163.84 g/mol. Na3PO4
Balance the following equation
N2 + F2 --> NF3
N2 + 3F2 --> 2NF3
What is a chemical reaction?
A process in which the atoms of one or more substances are rearranged to form different substances
What is the 5th step of stoichiometry.
Convert our moles of our unknown to our grams of unknown.
What is the molar mass of hydrogen peroxide?
34.02 g/mol H2O2
Balance the following equation.
P + O2 --> P2O5
4P + 5O2 --> 2P2O5
What is a reactant?
An element or product that react together to form a product.
How many grams of lithium Nitrate will be needed to make 250 grams of lithium sulfate assuming that you have an adequate amount of lead (IV)
Pb(SO4)2 + 4 LiNO3 --> Pb(NO3)4 + Li2SO4
313.48g of LiNO3
What is the 2nd Step of stoichiometry?
Balance the chemical equation.
What is the molar mass of (NH4)2S?
68.13 g/mol of (NH4)2S
Balance the following equation
C6H10 + O2 --> CO2 + H2O
2C6H10 + 17O2 --> 12CO2 + 10 H2O
What is a product?
The result reactants reacting together or reactants breaking down.
When you go from moles of one substance to moles of another substance you are completing step #4 of stoichiometry. What conversion factor do you need to make this happen?
Mole-Mole ratio
What is the molar mass of Zn(C2H3O2)2
183.4 g/mol Zn(C2H3O2)2
Balance the following equation
CO2 + H2O --> C6H12O6 + O2
6 CO2 + 6 H2O --> C6H12O6 + 6 O2
What is the definition of molar mass?
Everyone should get this right... (xg/mol.)