What Is the Total Heat Flow If 27 Grams of Steam

question 18

Multiple Choice

What is the total heat flow if 27 grams of steam at 143°C is cooled to become water at 34°C? The specific heat of water is 4.18 J/g • °C; the specific heat of steam is 2.0 J/g • °C.The heat of vaporization of water is 2.26 kJ/g,and the boiling point of water is 100°C.

• A)2.3 kJ
• B)7.4 kJ
• C)61 kJ
• D)71 kJ
• E)9.8 × 10³ kJ

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