Calculate kinetic energy of `4g N_(2)` at `-13^(@)C`.

Explanation

To calculate the kinetic energy of 4 g of N₂ at -13°C, we can follow these steps:

### Step 1: Convert the mass of N₂ to moles
To find the number of moles (n) of N₂, we use the formula:
\[ n = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}} \]

The molar mass of nitrogen (N) is approximately 14 g/mol, so the molar mass of N₂ is:
\[ \text{Molar mass of N₂} = 2 \times 14 \, \text{g/mol} = 28 \, \text{g/mol} \]
...