Read the English Dial (The Arrow near the Zero Indicates

question 252

Multiple Choice

Read the English dial (the arrow near the zero indicates the initial deflection of the needle) .

• A) -0.84 in.
• B) 0.16 in.
• C) -0.084 in.
• D) -0.016 in.
• E) 0.084 in.

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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.