How much heat energy is required to convert 3 kg of ice at −20℃
to steam at 140oC.
(???? = 2 100 J kg-1 K-1) (?????? = 4 200 J kg-1 K-1) (?????? = 1
400 J kg-1 K-1)
(?? = 3.3 x 105 J kg-1) (?? = 2.25 x 106 J kg-1)
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