<p>A sample of a liquid is kept at 1 atm. It is compressed to 5 atm which leads to a change of volume of 0.8 <span class="equation">\(cm^3\)</span>. If the bulk modulus of the liquid is 2 GPa, the initial volume of the liquid was _______ litre.</p>

<p>(Take 1 atm =&nbsp;<span class="equation">\(10^5\)</span>​​​​​​​ Pa)</p>