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题目:“室温为27℃,将20℃的1千克水与15℃的2千克水混合,由于实验装置不够精密,在混合过程中与周围物体有8.4×10焦的热量交换,求混合后水的温度是多少?”
Title: “The room temperature is 27°C. Mix 1 kg of water at 20°C with 2 kg of water at 15°C. Since the experimental setup is not precise enough, there is 8.4 × 10 Coke of heat exchange with surrounding objects during the mixing process. What is the temperature of the water?”