---
title: "Nitrogen monoxide gas, \\(\\text{NO(g)}\\), reacts with oxygen gas, \\(\\text{O}_2\\text{(g)}\\), to form nitrogen dioxide gas, \\(\\text{NO}_2\\text{(g)}\\), according to the following balanced equation:  \\[ 2\\text{NO(g)} + \\text{O}_2\\text{(g)} \\rightarrow 2\\text{NO}_2\\text{(g)} \\]  A particulate representation of a mixture of \\(\\text{NO(g)}\\) and \\(\\text{O}_2\\text{(g)}\\) in a rigid vessel prior to reaction is shown in the diagram. Assuming the reaction proceeds to completion, which of the following particulate diagrams best represents the contents of the vessel after the reaction has finished?"
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url: "https://nerd-notes.com/ubq/121535/"
date_modified: "2026-08-23T05:05:32+00:00"
---

# Nitrogen monoxide gas, \(\text{NO(g)}\), reacts with oxygen gas, \(\text{O}_2\text{(g)}\), to form nitrogen dioxide gas, \(\text{NO}_2\text{(g)}\), according to the following balanced equation:

\[ 2\text{NO(g)} + \text{O}_2\text{(g)} \rightarrow 2\text{NO}_2\text{(g)} \]

A particulate representation of a mixture of \(\text{NO(g)}\) and \(\text{O}_2\text{(g)}\) in a rigid vessel prior to reaction is shown in the diagram. Assuming the reaction proceeds to completion, which of the following particulate diagrams best represents the contents of the vessel after the reaction has finished?

Nitrogen monoxide gas, \(\text{NO(g)}\), reacts with oxygen gas, \(\text{O}_2\text{(g)}\), to form nitrogen dioxide gas, \(\text{NO}_2\text{(g)}\), according to the following balanced equation:

\[ 2\text{NO(g)} + \text{O}_2\text{(g)} \rightarrow 2\text{NO}_2\text{(g)} \]

A particulate representation of a mixture of \(\text{NO(g)}\) and \(\text{O}_2\text{(g)}\) in a rigid vessel prior to reaction is shown in the diagram. Assuming the reaction proceeds to completion, which of the following particulate diagrams best represents the contents of the vessel after the reaction has finished?

![A particulate diagram of a gas mixture inside a rigid rectangular vessel. A legend at the top maps: solid black circle = \(\text{N}\) atom, open white circle = \(\text{O}\) atom. Inside the vessel, there are exactly \(6\) \(\text{NO}\) molecules and exactly \(4\) \(\text{O}_2\) molecules, dispersed uniformly without overlapping. Each \(\text{NO}\) molecule consists of \(1\) solid black circle in direct contact with \(1\) open white circle. Each \(\text{O}_2\) molecule consists of \(2\) mutually touching open white circles. No other particles, labels, text, or annotations appear.](https://nerd-notes.com/wp-content/uploads/ubq-frq-generated/stem-fig-1-1787461531-rEK9nh.jpg)

- **A.** Diagram A
- **B.** Diagram B
- **C.** Diagram C
- **D.** Diagram D

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/121535/*