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1.单一物质吸热(或放热)例1 质量为2千克的水,温度从50℃降低到30℃,放出多少热量?分析热量的计算公式为Q吸=cm(t-t0)或Q放=cm(t0-t).本题属放热降温,故
1. Heat absorption (or heat release) of a single substance Example 1 The mass is 2 kg of water, and the temperature is reduced from 50°C to 30°C. How much heat is released? The formula for the analysis of heat is Q=cm(t-t0) or Q. Put = cm(t0-t). This question is exothermic cooling, so