23. 2-kg ice at -10°C is added to 5-kg water at 45°C. What is the final temperature of the system? The specific heat of ice and water are 2100 J/kg-K and 4190 J/kg-K, respectively. The latent heat of ice-water transition is 334000 J/kg.
(A) 7.5 °C
(B) 7.7 °C
(C) 7.9 °C
(D) 8.1 °C
(E) 8.3 °C

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