How Many Moles of Nitrogen Are Formed When 58

question 63

Multiple Choice

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

• A) 0.290 mol N₂
• B) 0.580 mol N₂
• C) 18.5 mol N₂
• D) 0.724 mol N₂
• E) 1.73 mol N₂

---

Definitions:

Neurofibrillary Tangles

Twisted protein fibers found within the brain's cells that are one of the hallmark physical characteristics of Alzheimer's disease.

Beta-Amyloid Protein

A small molecule that forms sphere-shaped deposits called senile plaques, linked to aging and to Alzheimer’s disease.

Neural Plaques

Deposits of beta-amyloid protein that form in the spaces between nerve cells in the brain, associated with Alzheimer's disease.

Diencephalon

A brain area (consisting of the mammillary bodies, thalamus, and hypothalamus) that plays a key role in transforming short-term to long-term memory, among other functions.