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Vocabulary
Moles to Moles
Mixed Problems
Mass to Mass
Balance the Equation
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?

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

Balance the following equation: _____H2 + ____O2 ---> ____H2O

2 H2 + 1O2 ---> 2H2O

200

Placed in front of each substance to help balance the equation

What is coefficients?

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

Balance the following Equation: _____KClO3 ---> KCl + ______O2

2KClO3 ---> 2KCl + 3O2

300

The amount of one mole of a substance, find it by determining each atoms average atomic mass on the periodic table 

What is molar mass?

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

4Al + 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

Na + Cl --> NaCl Sodium and chlorine react to produce sodium chloride (NaCl; MM=58.5 g/mol). Determine the amount of NaCl that can be produced from 24.7 g of sodium (Na)

What is 62 g NaCl?

300

Balance the following equation: ____P + _____O2 --->_____P2O5

4P + 5O2 ---> 2P2O5

400

For NH3, how many Nitrogen and Hydrogen atoms are there?

What is one Nitrogen and three hydrogen atoms?

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 is reacted? 

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

2 NaOH + H2SO4 --> 2 H2O + NaSO4 Sodium hydroxide reacts with sulfuric acid (H2SO4; MM=98.1 g/mol) 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

Balance the following equation: ___NaBr + ____CaF2 ---> ____NaF + ____CaBr2

2NaBr + 1CaF2 ---> 2NaF + 1CaBr2

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 --> 2H2O 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

4 Fe + 3 O2 → 2 Fe2O3 How many grams of Fe2O3 are produced when 7.42 grams of Fe is reacted?

What is 61.05g?

500

CuCl2 + 2NaNO3 --> Cu(NO3)2 + 2NaCl If 15 g CuCl2 (MM=134.5 g/mol) react, how much sodium chloride (MM = 58.5 g/mol) can be formed?

What is 13.0 g NaCl?

500

Balance the following equation: ____Mn + ____HI ---> ____H2 + ____MnI3

2Mn + 6HI ---> 3H2 + 2MnI3