A Chemical Reaction Is Balanced by Applying All Except Which

question 15

Multiple Choice

A chemical reaction is balanced by applying all except which of the following principles?

• A) No atoms are gained, lost, or changed in identity.
• B) Only the numbers preceding formulas can be changed.
• C) The set of smallest whole numbers should be used.
• D) Subscripts in the formulas may be changed if necessary.

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Definitions:

Thorax

The chest cavity.

Vital Capacity

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

Expiratory Reserve Volume

The maximum volume of air that can be forcibly exhaled after a normal exhalation.

Residual Volume

The amount of air remaining in the lungs after a forceful exhalation.