Elemental Analysis of the Soot Produced by a Candle Flame

question 31

Multiple Choice

Elemental analysis of the soot produced by a candle flame shows that it is 7.75% H and 92.3% C by mass. What is the empirical formula of this hydrocarbon?

• A) CH
• B) CH₂
• C) C₂H
• D) CH₃
• E) C₂H₃

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Definitions:

Attitudes

A psychological tendency expressed by evaluating a particular entity with some degree of favor or disfavor, reflecting how one feels about something.

Pretest

An initial test administered before the start of an experiment or intervention to determine baseline levels of participants' knowledge, abilities, or attitudes.

Nonequivalent Control Group Pretest-posttest Design

An experimental design where participants are not randomly assigned to groups and both groups are pre-tested and post-tested, allowing comparison despite the lack of random assignment.

Procedures of the Study

Descriptions of the specific methods and steps taken by researchers to collect, analyze, and report their findings.