An iron part weighing 0.5 kg, heated to 800 °C, is immersed in 5 liters of water, the temperature of which is 19 °C. At the same time, a certain amount of steam was formed, and the water was heated by 1 ° C. The specific heat capacities of iron and water are 460 and 4200 J/(kg*K), respectively, and the specific heat of vaporization of water is 2.3 MJ/kg. The density of water is 1000 kg/m^3. Find the mass of the generated steam.

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