A 050 G Sample of a Pure Substance Contains 0

question 177

Multiple Choice

A 0.50 g sample of a pure substance contains 0.40 g C and 0.10 g H. What is the empirical formula of this compound?

• A) CH₂
• B) CH₃
• C) CH₄
• D) C₂H₅
• E) none of these

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Definitions:

Early Types

Refers to the original or ancestral forms of organisms from which later kinds evolved.

Land Life

Refers to the existence, activities, and ecological roles of organisms that live primarily or exclusively on land as opposed to aquatic environments.

Ediacaran

Relating to or denoting the last period of the Precambrian era, characterized by the appearance of many large, soft-bodied organisms.

Cambrian Fauna

The diverse groups of organisms that lived during the Cambrian period, marked by an explosion in complex multicellular life forms.