---
title: "A student uses atom models to assemble models of \\(\\text{H}_2\\text{O}\\) molecules. The available numbers of atom models are shown in the table. Avogadro’s constant is \\(N_A=6.02\\times10^{23}\\ \\text{mol}^{-1}\\).  | Atom model | Number available | |————|——————| | \\(\\text{H}\\) | \\(6.02\\times10^{23}\\) | | \\(\\text{O}\\) | \\(1.806\\times10^{23}\\) |  What is the maximum amount of \\(\\text{H}_2\\text{O}\\) models that can be assembled, and which atom model is the limiting constituent?"
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url: "https://nerd-notes.com/ubq/119335/"
date_modified: "2026-08-19T12:39:52+00:00"
---

# A student uses atom models to assemble models of \(\text{H}_2\text{O}\) molecules. The available numbers of atom models are shown in the table. Avogadro’s constant is \(N_A=6.02\times10^{23}\ \text{mol}^{-1}\).

| Atom model | Number available |
|————|——————|
| \(\text{H}\) | \(6.02\times10^{23}\) |
| \(\text{O}\) | \(1.806\times10^{23}\) |

What is the maximum amount of \(\text{H}_2\text{O}\) models that can be assembled, and which atom model is the limiting constituent?

A student uses atom models to assemble models of \(\text{H}_2\text{O}\) molecules. The available numbers of atom models are shown in the table. Avogadro's constant is \(N_A=6.02\times10^{23}\ \text{mol}^{-1}\).

| Atom model | Number available |
|------------|------------------|
| \(\text{H}\) | \(6.02\times10^{23}\) |
| \(\text{O}\) | \(1.806\times10^{23}\) |

What is the maximum amount of \(\text{H}_2\text{O}\) models that can be assembled, and which atom model is the limiting constituent?

- **A.** \(0.150\text{ mol}\) of \(\text{H}_2\text{O}\); \(\text{O}\) is limiting
- **B.** \(0.300\text{ mol}\) of \(\text{H}_2\text{O}\); \(\text{O}\) is limiting
- **C.** \(0.500\text{ mol}\) of \(\text{H}_2\text{O}\); \(\text{H}\) is limiting
- **D.** \(0.600\text{ mol}\) of \(\text{H}_2\text{O}\); \(\text{O}\) is limiting

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/119335/*