Calorimetry: A 400-g block of iron at 400°C is dropped into a calorimeter (of negligible heat capacity) containing 60 g of water at 30°C. How much steam is produced? The latent heat of vaporization of water is 22.6 × 105 J/kg and its specific heat capacity is 4186 J/kg ? K. The average specific heat of iron over this temperature range is 560 J/kg ? K.
A. 22 g
B. 33 g
C. 42 g
D. 54 g
E. 59 g
Answer: A
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