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Vocabulary
Moles to Moles
Mixed Problems
Mass to Mass
Molar Mass
100
A conversion factor that relates the amounts in moles of any two substances involved in a chemical reaction.
What is mole ratio?
100
CO2 + 2LiOH --> Li2CO3 + H2O How many moles of lithium hydroxide are required to react with 20 mol of CO2?
What is 40 mol LiOH?
100
Mg + 2HCl --> MgCl2 + H2 How many grams of hydrogen will be produced if we start with 2 moles of hydrochloric acid and excess magnesium?
What is 2 g H2?
100
Mg + 2HCl --> MgCl2 + H2 What mass of hydrogen is produced from the reaction of 75 g HCl (MM=36.5 g/mol) and excess Mg?
What is 2.0 g H2?
100

What is the molar mass of Sodium? 

What is 22.99?

200

The number we use to determine the mole ratio in a balanced chemical equation.

What is coefficient?

200
6CO2 +6H2O --> C6H12O6 + 6O2 How many moles of carbon dioxide are needed to react with 3.25 mol of water in the reaction described above?
What is 3.25 mol CO2?
200
Mg + 2HCl --> MgCl2 + H2 What mass of hydrochloric acid (MM=36.5 g/mol) is needed to react with 2.50 moles of magnesium?
What is 182 g HCl?
200
2KClO3 --> 2KCl + 3O2 How many grams of KCl are produced if 5.0 g of KClO3 is decomposed?
What is 3 g KCl?
200

What is the molar mass of water H20. 

18.02 g

300

The name of the scientist who determined that the mole is equal to 6.02x 10^23.

What is the Avagadro?

300
2Mg +O2 --> 2MgO How many moles of magnesium oxide are produced from 1.2 moles of magnesium?
What is 1.2 mol MgO?
300

2Al + 3O2 ---> 2Al2O3

How many moles of aluminum atoms are needed to combine with 1.58 mol of oxygen molecules to make aluminum oxide?

What is 2.1 mol Al?

300

2Na + Cl2 --> 2NaCl

Sodium and chlorine react to produce sodium chloride (table salt; MM=58.5 g/mol). Determine the amount of product that can be produced from 24.7 g of sodium.

What is 62 g NaCl?

300

Molar mass of carbon dioxide

What is 44.02?

400

The study of the quantitative relationships between the amounts of reactants used and the amounts of products formed by a chemical reaction

What is stoichiometry?

400

N2 + 3H2 ---> 2NH3

Ammonia, NH3, is widely used as a fertilizer and in many household cleaners. How many moles of ammonia are produced when 6 mol of hydrogen gas react with an excess of nitrogen gas?

What is 4 mol NH3?

400

2NH3 ---> N2 + 3H2

Ammonia decomposes to produce nitrogen and hydrogen gases. How many moles of H2 can be formed by the decomposition of 0.145 moles of ammonia?

What is 0.218 mol H2?

400

2Na(OH) +  1H2(SO4)  ---> 2H20 + 1Na2(SO4) 

Sodium hydroxide reacts with sulfuric acid to form water and sodium sulfate. How many grams of sodium sulfate (MM=124 g/mol) will be formed from 200 g NaOH (MM=40 g/mol).

What is 355 g Na2SO4?

400

Molar mass of Cu(OH)2?

What is 97.56 g?

500
States that mass is neither created nor destroyed during ordinary chemical or physical reactions. (This is why we balance chemical equations!)
What is the law of conservation of mass?
500

2H2 + O2 ---> 2H20

Hydrogen and oxygen gases react under a specific set of conditions to produce water. How many moles of oxygen would be required to produce 5.0 moles of water?

What is 2.5 mol O2?

500

In a blast furnace, carbon monoxide is produced. How many molecules of carbon monoxide are equivalent to 56 grams carbon monoxide?

1.20 x 10 ^24?

500

CuCl2  + 2NaNO3  ---> Cu(NO3)2  + 2NaCl

When copper (II) chloride reacts with sodium nitrate, copper (II) nitrate and sodium chloride are formed. If 15 g CuCl2 (MM=134.5 g/mol), how much sodium chloride (MM = 58.5 g/mol) can be formed?

What is 13.0 g NaCl?

500

Molar mass of aluminum sulfate

342.15 g