The Product of the Oxidation of Iron in Most Soil

question 75

Multiple Choice

The product of the oxidation of iron in most soil in the absence of excess oxygen is black magnetite.The chemical formula of this compound is ____.

• A) FeO
• B) FeO₂
• C) Fe₂O₃
• D) Fe₃O₂
• E) Fe₃O₄

Understand and calculate the expected value of transformed random variables.

Calculate the probability of specific events given a probability distribution.

Understand and apply the concept of covariance and correlation.

Understand the basics of IUPAC naming for organic compounds.

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Definitions:

Atom

The smallest unit of ordinary matter that forms a chemical element, consisting of a nucleus surrounded by electrons.

Co

Co is the chemical symbol for cobalt, a naturally occurring element with atomic number 27, known for its magnetic properties and use in alloys.

Electrons

Negatively charged subatomic particles that orbit the nucleus of an atom and are involved in chemical bonds and electricity.

Atoms

The basic unit of a chemical element, consisting of a nucleus surrounded by electrons, defining the properties of matter.