The average molecular speed is gretest in which of the following gas samples?

Options

A. `1.0 mol N_(2)` at `560 K`
B. `0.50 mol` of `Ne` at `500 K`
C. `0.20 mol` of `CO_(2)` at `440 K`
D. `2.0 mol` of `He` at `140 K`

Explanation

To determine which gas sample has the greatest average molecular speed, we can follow these steps:

### Step 1: Understand the Formula for Average Molecular Speed
The average molecular speed (V) of a gas can be calculated using the formula:
\[ V = \sqrt{\frac{8RT}{\pi m}} \]
Where:
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