Calculate the root mean square speed of methane molecules at `27^(@)C`.

Explanation

To calculate the root mean square speed (RMS speed) of methane (CH₄) molecules at 27°C, we can follow these steps:

### Step 1: Convert the temperature from Celsius to Kelvin
To convert Celsius to Kelvin, we add 273 to the Celsius temperature.

\[ T(K) = 27°C + 273 = 300 K \]
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