Unit 4 Test

Math

100

How many moles of Cl₂ are needed to produce 3.0 moles of AlCl₃?

2 Al + 3 Cl₂ → 2 AlCl₃

4.5 moles Cl₂

200

How many moles of O₂ are needed to react with 5 moles of C₂H₆?
 2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O

17.5 moles O₂

300

If you start with 6.022 × 10²³ particles of Na, what mass of NaCl can be produced?

    2 Na + Cl₂ → 2 NaCl

58.46 g NaCl

400

How many particles of H2O are required to produce 103 L of NaOH? 

1 Na2O + 1 H2O → 2 NaOH

1.38 x 10^24 particles H₂O

500

 How many grams of NaOH are produced from 45 grams of Na₂O? 

1 Na₂O + 1 H₂O → 2 NaOH

58.08 g NaOH

Treasure Map

100

On the given side, going from Liters to Moles

divide by 22.4 

200

Identify coefficient final from the following problem.

How many grams of AlCl₃ can be produced from 54 grams of Al?

2 Al + 3 Cl₂ → 2 AlCl₃

2

300

Identify coefficient start from the following problem.

How many grams of AlCl₃ can be produced from 54 grams of Cl₂?

2 Al + 3 Cl₂ → 2 AlCl₃

3

400

Conversion from moles given to moles finding

x coefficient final

/ coefficient start

500

Given- grams NaOH

Finding- grams Na₂O

Show the path you would take, INCLUDING which compound you will be using for the molar mass

/molar mass NaOH

x co final

/ co start

x molar mass Na₂O

Balancing Equations

100

___H₂ +___ O₂ → ___H₂O

Coefficients:

2,1,2

200

___Fe + ___H₂SO₄ → ___FeSO₄ +___ H₂

Already Balanced!

300

___Na₂O + ___H₂O → ___NaOH

Coefficients:

1,1,2

400

___BaCl₂ + ___Na₂SO₄ → ___BaSO₄ + ___NaCl

Coefficients:

1,1,1,2

500

1. ___C₂H₆ + ___O₂ → ___CO₂ + ___H₂O

Coefficients: 

2,7,4,6

Misc. Rules

100

What is the last element that you balance when balancing equations

Oxygen

200

The unit for your answer is always what you have written down for the _________.

Finding/final

300

The given is always what comes after the ________.

Number

400

The order in which you balance the elements when balancing equations

1. Metals

2. Nonmetals

3. Hydrogen

4. Oxygen

500

Rule for when everything except Oxygen balances

Double ALL coefficients

Math part 2 b/c there's only 2 topics on this test

100

How many moles of NaCl are produced from 4 moles of Cl₂?
 2Na + Cl₂ → 2NaCl

8 moles NaCl

200

How many moles of NH₄NO₃ can be produced from 3 moles of HNO₃?
 NH₃ + HNO₃ → NH₄NO₃

3 moles NH₄NO₃

300

How many L of Cl2 are needed to completely react with 5.0 L of Al?

2 Al + 3 Cl₂ → 2 AlCl₃

7.5 L Cl₂

400

If you use 5 L of HCl, what mass of NaCl is formed?

HCl + NaOH → NaCl + H₂O

13.04 g NaCl

500

How many grams of AlCl₃ can be produced from 54 grams of Al?

2 Al + 3 Cl₂ → 2 AlCl₃

266.86 g AlCl₃