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 a temperature of 27°C and a pressure of 720 mm of Hg, we will follow these steps:

### Step 1: Convert Temperature to Kelvin
The temperature given is in Celsius. To convert Celsius to Kelvin, use the formula:
\[ T(K) = T(°C) + 273.15 \]

For our case:
\[ T = 27 + 273.15 = 300.15 \, K \]
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