---
title: "A student evaluates a system that condenses water produced by a small fuel burner. The student burns a \\(22.8\\text{ g}\\) sample of pure octane, \\(\\text{C}_8\\text{H}_{18}\\text{(l)}\\), in excess oxygen according to the equation  \\[2\\text{C}_8\\text{H}_{18}\\text{(l)}+25\\text{O}_2\\text{(g)}\\rightarrow16\\text{CO}_2\\text{(g)}+18\\text{H}_2\\text{O(g)}\\]  Assuming complete combustion and complete collection of the condensed water, what mass of water is collected?"
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url: "https://nerd-notes.com/ubq/119406/"
date_modified: "2026-08-19T12:40:10+00:00"
---

# A student evaluates a system that condenses water produced by a small fuel burner. The student burns a \(22.8\text{ g}\) sample of pure octane, \(\text{C}_8\text{H}_{18}\text{(l)}\), in excess oxygen according to the equation

\[2\text{C}_8\text{H}_{18}\text{(l)}+25\text{O}_2\text{(g)}\rightarrow16\text{CO}_2\text{(g)}+18\text{H}_2\text{O(g)}\]

Assuming complete combustion and complete collection of the condensed water, what mass of water is collected?

A student evaluates a system that condenses water produced by a small fuel burner. The student burns a \(22.8\text{ g}\) sample of pure octane, \(\text{C}_8\text{H}_{18}\text{(l)}\), in excess oxygen according to the equation

\[2\text{C}_8\text{H}_{18}\text{(l)}+25\text{O}_2\text{(g)}\rightarrow16\text{CO}_2\text{(g)}+18\text{H}_2\text{O(g)}\]

Assuming complete combustion and complete collection of the condensed water, what mass of water is collected?

- **A.** \(16.2\text{ g}\)
- **B.** \(32.4\text{ g}\)
- **C.** \(64.8\text{ g}\)
- **D.** \(324\text{ g}\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/119406/*