Methane (CH₄) Is a Natural Gas That Is Often Used

question 43

Multiple Choice

Methane (CH₄) is a natural gas that is often used as a fuel. When it burns in the presence of oxygen, carbon dioxide and water are produced. Replace the "X" in the following reaction of methane combustion to balance the equation. CH₄ + 2O₂ → CO₂ + XH₂O

• A)lCH₄ + 2O₂ → CO₂ + 0H₂O
• B)CH₄ + 2O₂ → CO₂ + 1H₂O
• C)CH₄ + 2O₂ → CO₂ + 2H₂O
• D)CH₄ + 2O₂ → CO₂ + 3₂O
• E)CH₄ + 2O₂ → CO₂ + 4H₂O

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Definitions:

Tidal Volume

The amount of air that is inhaled or exhaled during a normal breath.

Vital Capacity

The maximum amount of air a person can expel from the lungs after a maximum inhalation.

Total Lung Capacity

The maximum volume of air that the lungs can hold.

Tracheostomy

Creation of an opening into the trachea through the neck.