Exhibit 12-4
The following question(s) refer to the mass spectrum shown below. 
Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/
-Refer to Exhibit 12-4.This compound contains C,H,and one other atom.Identify the other atom from the mass spectrum and explain your reasoning.
Definitions:
Developmental Psychology
The scientific study of how humans change over the life span, from conception until death.
Testable Hypotheses
A proposition that can be experimentally evaluated to determine its validity.
Existing Theory
An established set of ideas or principles aimed at explaining facts or phenomena, already supported by a significant amount of empirical evidence.
Subsequent Research
The studies or investigations conducted after a preliminary study to further explore a subject or hypothesis.
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Q27: The specific rotation of a compound is
Q30: Name:<br>HOCH<sub>2</sub>CH<sub>2</sub>OH
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Q34: Draw the mechanism of the S<sub>N</sub>2 reaction
Q37: Refer to Exhibit 24-8.Prepare 3,4-dichloroaniline from benzene.
Q40: How many resonance forms can be drawn