---
title: "A specialized gas cylinder used for deep-sea diving contains a mixture of \\(96.0\\text{ g}\\) of \\(\\text{O}_2\\text{(g)}\\) and \\(4.00\\text{ g}\\) of \\(\\text{He}\\text{(g)}\\). The total pressure inside the cylinder is \\(80.0\\text{ atm}\\) at \\(298\\text{ K}\\). Assuming ideal gas behavior, what is the partial pressure of \\(\\text{O}_2\\text{(g)}\\) in the cylinder?"
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url: "https://nerd-notes.com/ubq/119705/"
date_modified: "2026-08-21T08:12:06+00:00"
---

# A specialized gas cylinder used for deep-sea diving contains a mixture of \(96.0\text{ g}\) of \(\text{O}_2\text{(g)}\) and \(4.00\text{ g}\) of \(\text{He}\text{(g)}\). The total pressure inside the cylinder is \(80.0\text{ atm}\) at \(298\text{ K}\). Assuming ideal gas behavior, what is the partial pressure of \(\text{O}_2\text{(g)}\) in the cylinder?

A specialized gas cylinder used for deep-sea diving contains a mixture of \(96.0\text{ g}\) of \(\text{O}_2\text{(g)}\) and \(4.00\text{ g}\) of \(\text{He}\text{(g)}\). The total pressure inside the cylinder is \(80.0\text{ atm}\) at \(298\text{ K}\). Assuming ideal gas behavior, what is the partial pressure of \(\text{O}_2\text{(g)}\) in the cylinder?

- **A.** \(20.0\text{ atm}\)
- **B.** \(48.0\text{ atm}\)
- **C.** \(60.0\text{ atm}\)
- **D.** \(76.8\text{ atm}\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/119705/*