In the Proton NMR Spectra of Aldehydes and Ketones, the Protons

question 54

Multiple Choice

In the proton NMR spectra of aldehydes and ketones, the protons bonded to carbons adjacent to the carbonyl group typically fall into which of the chemical shift ranges below?

• A) 1.0-2.0 ppm
• B) 2.0-3.0 ppm
• C) 4.0-4.5 ppm
• D) 7.0-8.0 ppm
• E) 9.0-10.0 ppm

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Definitions:

Unemployment Rate

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Adult Population

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Unemployed Category

A classification within labor economics representing individuals who are jobless, actively seeking work, and available to take up employment.

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The proportion of individuals within the working-age group that are engaged in the workforce, including those who are employed and those who are actively looking for work.