Calculate the rms speed of helium atoms at ` 127^(@) C` .

Explanation

To calculate the root mean square (rms) speed of helium atoms at 127°C, we will follow these steps:

### Step 1: Convert the temperature from Celsius to Kelvin
The formula to convert Celsius to Kelvin is:
\[ T(K) = T(°C) + 273 \]
Given \( T = 127°C \):
\[ T = 127 + 273 = 400 \, K \]

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