Consider the Following Second Order Reaction with a Rate Constant

question 32

Multiple Choice

Consider the following second order reaction with a rate constant k = 10 M ^{- 1}sec ^{- 1} at 383 K:
NO₂ (g) →NO (g) + ¹/₂ O₂ (g)
If the initial concentration of NO₂ equals 1.5 M, what is the half-life for this reaction?

• A) 6.7×10 ^{- 2} sec
• B) 6.9×10 ^{- 2} sec
• C) 1.5×10 ^{- 1} sec
• D) 1.4×10¹ sec
• E) 6.7×10¹ sec

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Definitions:

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A heart condition where the aortic valve does not close properly, causing blood to flow backward into the heart.

Cardiomyopathy

A disease of the heart muscle that makes it harder for the heart to pump blood to the rest of the body.

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A chronic, progressive condition in which the heart muscle is unable to pump enough blood through to meet the body's needs for blood and oxygen.

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