Which of the following compounds will show an absorption at 2250 cm-1? 
Definitions:
Occlusion
In healthcare, it refers to the blockage or closing of a blood vessel or organ. In dentistry, it relates to the alignment of the teeth when the jaws are closed.
Vase
A container usually made of glass, ceramic, or metal used for holding cut flowers or as a decorative piece.
Motion Detectors
Devices that detect moving objects, typically used in security systems to alert of intruders, or in automatic lighting systems.
Motion Aftereffects
The illusion of motion in the opposite direction that occurs after one stops looking at moving stimuli.
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