Vocabulary
Where do you look when you move from one molecule to another.
Look at the coefficients.
CO2 + 2Li(OH) --> Li2(CO3) + H2O
How many moles of H2O are required to react with 10 mol CO2?
10 mole H2O
2Mg +O2 --> 2MgO
How many moles of magnesium oxide are produced from 1.2 moles magnesium?
1.2 mole MgO
2Mg + O2 --> 2MgO
If you have 2 moles of magnesium, how many moles of oxygen are needed to make 2 moles of MgO?
1 mole O2
A cooking recipe is similar to
stoichiometry
The leftover reactants that were NOT used up in a chemical reaction.
Excess Reactant
CO2 + 2Li(OH) --> Li2(CO3) + H2O
How many moles of Li(OH) are required to react with 20 mol Li2(CO3)?
40 moles Li(OH)
2Mg + O2 --> 2MgO
How many moles of oxygen are produced from 2.5 moles magnesium oxide?
1.25 moles O2
2Mg + O2 --> 2MgO
If you have 20 molecules of oxygen, how many molecules of magnesium are needed to make 40 molecules of magnesium oxide?
40 molecules magnesium
Scientists can't count molecules so how do they measure substances?
weighing
The reactant that ran out first.
Limiting Reactant
6CO2 +6H2O --> C6H12O6 + 6O2
How many moles of C6H12O6 are required to react with 12 moles O2?
2 mole C6H12O6
3H2 + O2 --> 2NH3
How many moles of H2 are required to produce 5 moles NH3?
7.5 moles NH3
4Cr + 3O2 --> 2Cr2O3
4 mole Cr / 2 mole Cr2O3
What does mole ratio refer to?
Ratio of molecules of one reactant or product to another
The periodic table.
6CO2 +6H2O --> C6H12O6 + 6O2
How many moles of O2 are required to react with 6 moles C6H12O6?
36 moles C6H12O6
3H2 + O2 --> 2NH3
How many moles of NH3 are produced from 7.82 moles H2?
5.21 moles NH3
CuCl2 + 2Na(NO3) --> Cu(NO3) + 2NaCl
If you have 15 grams of CuCl2 how many grams of NaCl do you produce?
JEOPARDY QUESTION WORTH 1000 POINTS FOR THE FIRST TEAM TO CALCULATE THE CORRECT ANSWER!
13.05 g NaCl
Describe the law of conservation of mass.