400 grams of boiling water (temperature 100°C, specific heat capacity 4.2 J/K/gram) are poured into an aluminum pan whose mass is 600 grams and initial temperature 20°C (the specific heat capacity of...

400 grams of boiling water (temperature 100°C, specific heat capacity 4.2 J/K/gram) are poured into an aluminum pan whose

mass is 600 grams and initial temperature 20°C (the specific heat capacity of aluminum is 0.9 J/K/gram). After a short time,

what is the temperature of the water? Explain. What simplifying assumptions did you have to make?