Stoichiometry Review Jeopardy!!

Vocabulary

100

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

What is mole ratio?

200

The name of the whole number value that balances chemical equations. 

Coefficient 

300

The value that tells you how many mols of a substance are in a balanced chemical equation. 

Coefficient

400

The sum of the mass of all the atoms found in one mole's worth of a substance. 

Molar Mass

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?

Moles to Moles

100

CO₂ + 2LiOH --> Li₂CO₃ + H₂O 

How many moles of LiOH are required to react with 20 mol of CO₂?

What is 40 mol LiOH?

200

6CO₂ +6H₂O --> C₆H₁₂O₆ + 6O₂ 

How many moles of CO₂ are needed to react with 3.25 mol of H₂O in the reaction described above?

What is 3.25 mol CO2?

300

2Mg +O₂ --> 2MgO How many moles of MgO are produced from 1.2 moles of O₂?

What is 2.4 mol MgO?

400

2 Dy + 3 F₂ ---> 2 DyF₃ 

How many mols of F₂ need to react to produce 2.13 mols of DyF₃?

3.195 mols DyF₃

500

P₄ + 5 O₂ ---> P₄O₁₀

How many of mols of O₂ need to react to produce 1.5 mols of P₄?

What is 7.5 mol O₂?

Particles and mols

100

C₅H₁₂ + 8 O₂ → 5 CO₂ + 6 H₂O

 If 5.0 × 10²³ particles of C₅H₁₂ are reacted, how many particles of H₂O will be produced?

3.0 × 10²⁴ particles H₂O

200

2 Fe + 6 HCl → 2 FeCl₃ + 3 H₂

If 1.5 moles of H₂ are produced, how many particles of FeCl₃ will also be produced?  

6.0 × 10²³ particles FeCl₃

300

2 AgNO₃ + MgCl₂ → 2 AgCl + Mg(NO₃)₂

If 2.0 × 10²² particles of MgCl₂ are reacted, how many moles of AgNO₃ will also be reacted?

0.066 moles AgNO₃

400

Zn + H₂SO₄ → ZnSO₄ + H₂ 

If 4.0 × 10²² particles of H₂SO₄ are reacted, how many particles of ZnSO₄ will be produced?

4.0 × 10²² particles ZnSO₄

500

2 Fe₂O₃ + 3 C → 4 Fe + 3 CO₂

If 4.0 × 10²³ particles of CO₂ are produced, how many particles of Fe will also be produced? 

 

 5.3 × 10²³ particles Fe 

Mass to Mass

100

Mg + 2HCl --> MgCl₂ + H₂ 

What mass of H₂ (mm=2.016g/mol)is produced from the reaction of 75 g HCl (mm=36.5 g/mol)?

What is 2.0 g H2?

200

2KClO₃ --> 2KCl + 3O₂ 

How many grams of KCl (75.4413 g/mol) are produced if 5.0 g of KClO₃ (122.55g/mol) is decomposed?

What is 3 g KCl?

300

2 Na + Cl₂ --> 2 NaCl

Determine the mass of NaCl (mm=58.44 g/mol) that can be produced from 24.7 g of Na (mm=22.99 g/mol). 

What is 62 g NaCl?

400

2 NaOH + H₂SO₄ ---> 2 H₂O + Na₂SO₄

How many grams of Na₂SO₄  (mm=142.04 g/mol) will be formed from 200 g NaOH (mm=39.999 g/mol)?

What is 355 g Na2SO4?

500

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

If 15 g CuCl₂ (mm=134.45g/mol) react, how many g of NaCl (mm=58.44g/mol) will be formed? 

What is 13.0 g NaCl?

Miscellaneous

100

CO₂ + 2LiOH --> Li₂CO₃ + H₂O

If 1.2 mols CO₂  react, how many g of H₂O (mm=18.02) will be produced?

21.6 g H₂O

200

CO₂ + 2LiOH --> Li₂CO₃ + H₂O

If 100 g of LiOH (mm=23.95) react, how many mols of H₂O will be produced?

2.09 mols of H₂O

300

CO₂ + 2LiOH --> Li₂CO₃ + H₂O

If 2.1x10²⁰ particles of LiOH are reacted, how many g of H₂O (mm=18.02 g/mol) will be produced?

0.003 g H₂O

400

2LiOH + H₂SO₄ --> Li2SO₄ + 2H₂O

Convert 1.23 x 10²³ particles of LiOH to particles of H₂SO₄

6.15x10²² particles of H₂SO₄

500

CO₂ + 2LiOH --> Li₂CO₃ + H₂O

How many grams of LiOH (mm=23.95 g/mol) will need to react to produce 2.34 mols of Li₂CO₃ ?

112. 09 g Li₂CO₃