The Reaction of 0

question 40

Multiple Choice

The reaction of 0.779 g K with O₂ forms 1.417 g potassium superoxide,a substance used in self-contained breathing devices.Determine the formula for potassium superoxide.

• A) KO₂
• B) KO
• C) K₂O₃
• D) K₂O
• E) KO₄

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Definitions:

Hemoglobin

A protein in red blood cells that carries oxygen from the lungs to the body's tissues and returns carbon dioxide from the tissues back to the lungs.

Enzymes

Biological molecules that act as catalysts to speed up chemical reactions in living organisms without being consumed in the process.

Proteins

Large, complex molecules that play many critical roles in the body, including catalyzing metabolic reactions, DNA replication, and responding to stimuli.

Pica

A compulsive eating disorder of non-nutritive substances like dirt or paper, often seen in children and pregnant women.