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Using the diagram, determine the limiting reactant, the product formed is water.

• oxygen

• hydrogen

• none of the reactant are limiting

• both hydrogen and oxygen

The diagram below represents H₂ and Cl₂ molecules that will potentially react to form HCl. Which of the following best describes this reaction?

• The limiting reactant is chlorine.

• The limiting reactant is hydrogen.

• Hydrogen and chlorine are nonreactive.

• All molecules shown will react to form the product. 

Hydrogen and nitrogen react as shown to form ammonia (NH3). What is true of this reaction? 

• Three ammonia molecules are formed, with zero molecules remaining.

• Two ammonia molecules are formed, with two hydrogen molecules remaining.

• Six ammonia molecules are formed, with zero molecules remaining.

• Two ammonia molecules are formed, with two nitrogen molecules remaining. 

Hydrogen and oxygen molecules combine to form water molecules as shown in the reaction below. Given the molecules provided, which of the following is true about the products of this reaction? 

• 2 H₂O molecules are produced, O₂ is the limiting reactant

• 4 H₂O molecules are produced, H₂ is the limiting reactant

• 4 H₂O molecules are produced, O₂ is the limiting reactant

• 6 H₂O molecules are produced, H₂ is the limiting reactant

Draw the products (notes/whiteboard) that can be formed from the reactants shown. Then identify the limiting and excess reactants.

• Fe is limiting and S is excess.

• S is limiting and Fe is excess.

• FeS is both limiting and excess.

• There is no limiting or excess reactants.

Identify the limiting and excess reactants in the reaction shown.

• N₂ is limiting and H₂ is excess. 

• H₂ is limiting and N₂ is excess. 

• NH₃ is both limiting and excess.

• There is no limiting reactant. 

When does a chemical reaction stop?

• When the lab is finished
• When the excess reactant is used up
• When the limiting reactant is used up
• Chemical reactions never stop

SO₂ + O₂ → SO₃

The unbalanced equation representing a chemical reaction is shown.

Which of the following particle models represents the balanced chemical equation?

• 
• 
• 
• 

What is the limiting reactant?

• bun

• cheese

• lettuce

• patty

What is the limiting reactant?

• sausage

• bun

• complete hot dog

• there isn't a limiting reactant