A Convenient Way to Produce Very High Purity Oxygen in the Laboratory

question 45

Short Answer

A convenient way to produce very high purity oxygen in the laboratory is to decompose KMnO₄(s)at high temperature according to the following chemical equation:
2KMnO₄(s) $\rarr$ K₂MnO₄(s)+ MnO₂(s)+ O₂(g)
If 2.50 L of O₂(g)is needed at 1.00 atm and 20°C, what mass of KMnO₄(s)should be decomposed? Assume the decomposition of KMnO₄(s)goes to completion.

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Definitions:

Consensus Factors

Involve elements or variables that are generally agreed upon within a group or society.

Linguistic Relativity

View that language determines thought and therefore people who speak different languages see the world in very different ways.

Innate Grammatical Rules

The concept in linguistics suggesting that the ability to understand and form grammatical sentences is hardwired into the human brain.

Pre-Linguistic Stage

A developmental phase in infants before they acquire language, characterized by non-verbal communication and understanding.