Find the temperature at which oxygen molecules have the same rms speed as `N_2` molecules at `7^@ `C.

Explanation

To find the temperature at which oxygen molecules (O2) have the same root mean square (rms) speed as nitrogen molecules (N2) at 7°C, we can follow these steps:

### Step 1: Convert the temperature of nitrogen from Celsius to Kelvin.
The temperature in Kelvin (T) is given by:
\[ T(K) = T(°C) + 273 \]
For nitrogen at 7°C:
\[ T_{N2} = 7 + 273 = 280 \, K \]

...