Consider the Reaction Shown

question 79

Multiple Choice

Consider the reaction shown:
2 CO(g) + O₂(g) → CO₂(g) + 135.2 kcal
This reaction is ________ because the sign of ΔH is ________.

• A)endothermic;positive
• B)exothermic;positive
• C)endothermic;negative
• D)exothermic;negative
• E)exothermic;neither positive nor negative

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Definitions:

Sound Waves

Sound waves are vibrations that travel through the air or another medium, which can be heard when they reach a person's or animal's ear.

Amplitude

The magnitude or intensity of a fluctuating signal, such as sound, light, or an electric current, often measured from its rest position to its peak.

Conduction Deafness

A type of hearing loss where there is a problem transferring sound waves anywhere along the pathway from the outer ear to the inner ear.

Eardrum

A thin membrane that separates the outer ear from the middle ear and vibrates in response to sound waves, contributing to the ability to hear.