<p>The internal energy of air in 4m&nbsp;<span class="equation">\(\times\)</span>&nbsp;4m <span class="equation">\(\times\)</span>&nbsp;3m sized&nbsp;room at 1 atmospheric pressure will be___________________ <span class="equation">\(\times10^6J\)</span>​​​​​​​​​​​​​​</p>

<p>(Consider air as diatomic molecule)</p>