Stoichiometry and Chemical Reactions

What is the mole ratio of water (H₂O) to oxygen (O₂) in the balanced chemical equation 2 H₂O → 2 H₂ + O₂?

• 1:1

• 2:1

• 1:2

• 2:2

If 6.2 moles of water (H₂O) are used in the reaction 2 H₂O → 2 H₂ + O₂, how many moles of oxygen (O₂) will be produced using the "recipe" method?

• 6.2 moles O₂

• 3.1 moles O₂

• 12.4 moles O₂

• 2.0 moles O₂

Which of the following is a correct conversion factor to relate moles of water (H₂O) to moles of oxygen (O₂) for the reaction 2 H₂O → 2 H₂ + O₂?

• 2 moles H₂O / 1 mole O₂

• 1 mole O₂ / 2 moles H₂O

• 2 moles H₂ / 1 mole O₂

• 1 mole O₂ / 2 moles H₂

Using the conversion factor method for the reaction 2 H₂O → 2 H₂ + O₂, how many moles of oxygen (O₂) will be produced from 6.2 moles of water (H₂O)?

• 6.2 moles O₂

• 3.1 moles O₂

• 12.4 moles O₂

• 2.0 moles O₂

For the reaction 2 H₂O → 2 H₂ + O₂, how many moles of H₂O are required to produce 19.2 moles of O₂?

• 19.2 moles

• 38.4 moles

• 9.6 moles

• 2 moles

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In the reaction 2 H₂S + 3 O₂ → 2 SO₂ + 2 H₂O, how many moles of O₂ are needed to react completely with 8.4 moles of H₂S?

• 8.4 moles

• 16.8 moles

• 12.6 moles

• 4.2 moles

Given the reaction 2 H₂S + 3 O₂ → 2 SO₂ + 2 H₂O, if you start with 9.2 moles of O₂, how many moles of H₂S are required for the reaction?

• 3.1 moles

• 6.2 moles

• 9.2 moles

• 12.3 moles

For the reaction 2H₂S + 3O₂ → 2SO₂ + 2H₂O, if you start with 9.2 moles of O₂, how many moles of H₂S are needed?

• 9.2 moles

• 6.2 moles

• 3.1 moles

• 13.8 moles

For the reaction 2H₂S + 3O₂ → 2SO₂ + 2H₂O, if you start with 9.2 moles of O₂, how many moles of SO₂ will be produced?

• 9.2 moles

• 6.2 moles

• 3.1 moles

• 13.8 moles