A Research Project Which Looks at Many People of Many

question 111

Multiple Choice

A research project which looks at many people of many different ages all at once,in order to compare them to each other is called a _____ study.

• A)cross-sectional
• B)longitudinal
• C)latitudinal
• D)cross-sequential

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Definitions:

NMR

Nuclear Magnetic Resonance, a spectroscopic technique that exploits the magnetic properties of certain atomic nuclei to provide information about the structure, dynamics, reaction state, and chemical environment of molecules.

Unknown Compound

A substance whose chemical identity is not yet determined or disclosed, often a focus in analytical and synthetic chemistry research.

Proton Decoupled

A technique in NMR spectroscopy where the coupling between nuclear spins is removed, often leading to simpler spectra.

Compounds

Substances formed from two or more elements chemically bonded together in fixed proportions.