When water is boiled under a pressure of 2 atm, the heat of vaporization is 2.20×106Jkg−1 and the boiling point is 120°C. At this pressure, 1 kg of water has a volume of 10-3 m3 and 1 kg of steam has a volume of 0.824 m3. What is the work done when 1 kg of steam is formed at this temperature?