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Moles to Moles
Volume and Particles
Mass to Mass
Miscellaneous
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 molecules of hydrogen will be produced if we start with 2.0 liters of hydrochloric acid and excess magnesium?

What is 2.7 x 10^22 molecules 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

N2 + 3H2 --> 2NH3 In the reaction above, a student reacted 5.33 moles of nitrogen with 9.58 moles of hydrogen. Determine the limiting reactant. 

What is H2?

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 volume of hydrochloric acid is needed to react with 2.50 moles of magnesium?

What is 112 L 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
Avogadro's number.
What is 6.022 x 10^23?
300
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

2Mg +O2 --> 2MgO 

How many atoms of magnesium oxide are produced from 1.2x10^24 molecules of magnesium?

What is 1.2x10^24 atoms of MgO?

300
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 and excess chlorine.
What is 62 g NaCl?
300

A conversion factor that relates the amounts in moles of any two substances involved in a chemical reaction.

What is mole ratio

400
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

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

What is 4.87 liters H2?

400
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) and an excess of sulfuric acid?
What is 355 g Na2SO4?
400

The study of quantities as it relates to chemical reactions

What is stoichiometry

500
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

Aluminum oxide reacts with iron to form Fe2O3 and Aluminum. How many molecules of aluminum is formed if 5.79 x10^23 particles of aluminum oxide reacts. 

What is 1.16 x10^24 molecules of Al?

500
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) react with 20 g NaNO3 (MM=85 g/mol), how much sodium chloride (MM = 58.5 g/mol) can be formed?
What is 13.0 g NaCl?
500
This questions is worth 1000 points! SURPRISE! Chlorine gas reacts with potassium bromide to produce potassium chloride and bromine gas. How many grams of potassium chloride can be produced from 300. g each of chlorine and potassium bromide?
What is 188 g KCl?