A 0125 G Sample of Unknown Hydrocarbon Is Prepared for Combustion

question 21

Multiple Choice

A 0.125 g sample of unknown hydrocarbon is prepared for combustion analysis. After the hydrocarbon undergoes complete combustion, 0.4225 g of CO₂ and 0.0865 g of H₂O are produced. What is the empirical formula of the unknown? Paired item 1)

• A) CH₃
• B) CH
• C) CH₂

---

Definitions:

Macroevolution

Large-scale evolutionary changes that occur over geological time, leading to the emergence of new species and the extinction of others.

Evolutionary Changes

The alterations in the genetic makeup of populations over time, leading to the diversity of organisms found on Earth.

Species

An assembly of life forms made up of alike members that can interchange genes or mate with each other.

Microevolution

Evolutionary changes within a species or small group of organisms, particularly over a short period.