Calculate RMS velocity of ethane at `27^@` C and 720 mm of Hg pressure.

Explanation

To calculate the RMS (Root Mean Square) velocity of ethane at 27°C and 720 mm of Hg pressure, we will follow these steps:

### Step 1: Understand the Formula
The formula for RMS velocity (v_rms) is given by:
\[ v_{rms} = \sqrt{\frac{3RT}{M}} \]
where:
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