Stoichiometry

Cl₂ + 2 KBr → Br₂ + 2 KCl

How many grams of potassium chloride (KCl) can be produced from 356 g of potassium bromide (KBr)?

• 749 g

• 223 g

• 479 g

• 814 g

Tags

NGSS.HS-PS1-7

4 Al + 3 O₂ → 2 Al₂O₃ How much aluminum would be needed to completely react with 45 grams of oxygen (O₂)?

• 45 g Al

• 50.625 g Al

• 151.875 g Al

• 39.96875 g Al

CH₄ + 2 O₂ → CO₂ + 2 H₂O

How many grams of carbon dioxide are produced from the combustion of 110 g of CH₄?

• 44 g CO₂

• 110 g CO₂

• 6.875 g CO₂

• 302.5 g CO₂

B₂H₆ + 3 O₂ → 2 HBO₂ + 2 H₂O

What mass of O₂ will be needed to burn 36.1 g of B₂H₆?

• 13.8 g O₂

• 36 g O₂

• 123.2 g O₂

• 41.14 g O₂

What volume of hydrogen will be produced at STP by the reaction 67.3 g of magnesium with excess water according to the following reaction?

Mg + 2 H₂O → Mg(OH)₂ + H₂

• 62L

• 65L

• 31L

• 124L

2 Al + 3 H₂SO₄ → Al₂(SO₄)₃ + 3 H₂

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

How many liters of NH₃ are needed to react completely with 30.0L of NO?

4 NH₃ + 6 NO → 5 N₂ + 6 H₂O

• 5.0 L

• 20.0 L

• 7.5 L

• 120.0 L

Fe + S → FeS

In the experiment above, 7.62 g of Fe are allowed to react with S.

How many grams of FeS is formed?

• 14.8 g

• 11.99 g

• 13.7 g

• 19.9 g

2 Na + 2 H₂O → 2 NaOH + H₂

How many grams of hydrogen are produced if 120 g of Na are available?

• 5.27 g

• 2.6 g

• 690 g

• 45 g

2 H₂ + O₂ → 2 H₂O

How many grams of H₂O can be produced from 3.91 g of O₂?

• 1.905

• 4.4

• 2.2

• 1.1