7. Calculate the amount of energy needed to convert 200. g of water at 25.0°C to steam at 150.0°C.  The following information will be useful: • The heat of vaporization of water is 2256 J·g–1 • The specific heat capacity of water is 4.184 J·g–1·K–1 • The specific heat capacity of water vapour is 1.86 J·g–1·K–1

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