As of 2010, to Be in the Bottom Quintile for Income

question 66

Multiple Choice

As of 2010, to be in the bottom quintile for income distribution in the United States, a family needed in income no more than

• A) $15,000.
• B) $21,000.
• C) $27,000.
• D) $35,000.

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Definitions:

C-13 NMR

A type of nuclear magnetic resonance spectroscopy that focuses on the detection of carbon-13 isotopes to determine the structure of organic compounds.

Off Resonance Splitting

A phenomenon in NMR spectroscopy where the splitting of signal occurs away from the resonance frequency due to interactions with neighboring atoms.

H-NMR Spectra

The set of signals obtained in hydrogen-1 nuclear magnetic resonance spectroscopy, which provides information on the molecular structure, especially about the environment of hydrogen atoms in a compound.

Quintet

A term often used in NMR spectroscopy to describe a signal pattern consisting of five peaks, indicative of the surrounding nuclear environment in molecules.