Water at 23.0 °C is sprayed onto 0.140 kg of molten gold at 1063 °C (its melting point). The water boils away, forming steam at 100.0 °C and leaving solid gold at 1063 °C. What is the minimum mass of water that must be used? Could someone please checking my working out? My answer is incorrect and I'm not sure why.

The answer should be in kg

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