---
title: "The graph below shows the Maxwell-Boltzmann molecular speed distributions for \\(1.00 \\text{ mol}\\) samples of two pure gases, Gas 1 and Gas 2, in separate identical containers at \\(300 \\text{ K}\\).  Which of the following claims about the two gases is best supported by the data in the graph?"
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url: "https://nerd-notes.com/ubq/119747/"
date_modified: "2026-08-21T17:11:02+00:00"
---

# The graph below shows the Maxwell-Boltzmann molecular speed distributions for \(1.00 \text{ mol}\) samples of two pure gases, Gas 1 and Gas 2, in separate identical containers at \(300 \text{ K}\).

Which of the following claims about the two gases is best supported by the data in the graph?

The graph below shows the Maxwell-Boltzmann molecular speed distributions for \(1.00 \text{ mol}\) samples of two pure gases, Gas 1 and Gas 2, in separate identical containers at \(300 \text{ K}\).

Which of the following claims about the two gases is best supported by the data in the graph?

![A line graph displaying molecular speed distributions on bare axes without gridlines. The horizontal axis is labeled 'Molecular speed (m/s)' and the vertical axis is labeled 'Relative number of molecules'. Both axes originate at (0, 0). Two curves are plotted starting at the origin: Curve 1 (rendered as a solid curve) rises sharply to a tall, narrow peak located at a relatively low speed value, then decreases and tapers off. Curve 2 (rendered as a dashed curve) rises more gradually to a lower, broader peak positioned further to the right at a higher speed value, with a long tail extending to high speeds. A legend located in the upper right quadrant indicates: solid line = Gas 1; dashed line = Gas 2. No other lines, labels, text, or annotations appear.](https://nerd-notes.com/wp-content/uploads/ubq-frq-generated/stem-fig-1-1787299932-E5qVft.jpg)

- **A.** Gas \(2\) has a lower molar mass than Gas \(1\), and both gases have the same average kinetic energy.
- **B.** Gas \(2\) has a lower molar mass than Gas \(1\), and Gas \(2\) has a greater average kinetic energy than Gas \(1\).
- **C.** Gas \(2\) has a greater molar mass than Gas \(1\), and both gases have the same average kinetic energy.
- **D.** Gas \(2\) has a greater molar mass than Gas \(1\), and Gas \(1\) has a greater average kinetic energy than Gas \(2\).

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/119747/*