Chem Reactions Part 2 Review

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

What is conserved in a chemical reaction?

• mass, only

• charge, only

• mass and energy

• mass and charge

• mass, charge, and energy

Tags

NGSS.HS-PS1-7

Balance this equation.

__CF₄ + __Br₂ --> __CBr₄ + __F₂

• 2,1,2,1

• 1,2,2,1

• 1,2,1,2

• 2,2,2,2

Tags

NGSS.HS-PS1-7

Given the equation:

2NaClO₃ (s) → 2NaCl (s) + 3O₂ (g)

When 2.00 moles of NaClO₃ react, how many grams of O₂ is produced?

• 56 g of O₂

• 96 g of O₂

• 64 g O₂

• 32 g O₂

Tags

NGSS.HS-PS1-7

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

What is the mole ratio of iron to iron (III) oxide in the balanced equation below?

4Fe + 3O₂ → 2Fe₂O₃

• 1:1

• 2:3

• 3:4

• 2:1

• 1:2

Tags

NGSS.HS-PS1-7

2Al + 3H₂SO₄ → Al₂(SO₄)₃ + 3H₂

How many grams of aluminum sulfate would be formed if 250g H₂SO₄ completely reacted with aluminum?

• 0.85 g

• 290 g

• 450 g

• 870 g

Tags

NGSS.HS-PS1-7

A 3.40-gram sample of oxygen reacted completely with calcium to form 4.85 grams of calcium oxide.  This reaction is represented by the balanced equation below.

2Ca(s) + O₂(g) → 2CaO(s)

Determine the total mass of calcium that reacted.

• 0.45 g

• 0.73 g

• 1.45 g

• 2.90 g

Tags

NGSS.HS-PS1-7

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

4NH₃ + 5O₂ --> 4NO + 6H₂O
How many grams of NO are formed if 6.30g of ammonia react with 1.80g of oxygen? 

• 0.37g
• 0.045g
• 1.35g
• 11.1g

Tags

NGSS.HS-PS1-7