Which of the Following Statements Is True of the Reaction

question 47

Multiple Choice

Which of the following statements is true of the reaction between Ba(NO ₃ ) ₂ and Na ₂ SO ₄ ?

• A)Two moles of Ba(NO ₃ ) ₂ and four moles of Na ₂ SO ₄ react without excess remaining.
• B)Two moles of Ba(NO ₃ ) ₂ react with excess Na ₂ SO ₄ to form two moles of BaSO ₄ .
• C)These two compounds react to form solid NaNO ₃ , Ba ²⁺ , and SO ₄ ^{2 −} .
• D)Sulfate is a spectator ion.

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Definitions:

Nerve Conduction

The process by which electrical signals are transmitted through nerve fibers.

Afferent Nerves

Also called sensory nerves; nerves that carry information about the external environment to the brain and spinal cord via sensory receptors.

Electrochemical Messages

The method by which neurons communicate with each other, involving electrical signals and chemical neurotransmitter substances.

Olfactory

This term relates to the sense of smell.