How Many Moles of Oxygen Are Formed When 58

question 183

Multiple Choice

How many moles of oxygen are formed when 58.6 g of KNO₃ decomposes according to the following reaction? The molar mass of KNO₃ is 101.11 g mol^-1.
4KNO₃(s) → 2K₂O(s) + 2N₂(g) + 5O₂(g)

• A) 0.290 mol O₂
• B) 0.580 mol O₂
• C) 18.5 mol O₂
• D) 0.724 mol O₂
• E) 1.73 mol O₂

Understand the difference between descriptive and inferential statistics.

Learn about the types of data (ordinal, nominal, interval, ratio) and appropriate techniques for their analysis.

Grasp the concept and application of sampling distributions, including the standard normal distribution, Chi-squared distribution, and others.

Recognize and apply the concepts of Type I and Type II errors in hypothesis testing.

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Definitions:

Benthic Zone

refers to the ecological region at the lowest level of a body of water such as an ocean, lake, or stream, including the sediment surface and some sub-surface layers.

Littoral Zone

The littoral zone is the area of a lake or ocean shore that is close to the shore, often characterized by shallow waters, where sunlight reaches the bottom allowing aquatic plants to grow.

Limnetic Zone

The open water area of a freshwater body, such as a lake, where sunlight penetrates deeply enough for photosynthesis to occur.

Decomposers

Organisms, such as bacteria and fungi, that break down dead organic material, recycling nutrients back into the ecosystem.