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13问答网 > 设有温度为-10摄氏度的冰一克,加热后变为10摄氏度的水,求出它所吸收的热量q和温度t的关系

设有温度为-10摄氏度的冰一克,加热后变为10摄氏度的水,求出它所吸收的热量q和温度t的关系

2025-03-15 14:56:30

推荐回答（1个）

回答1：

分为3步：

-10℃冰→0℃冰
0℃冰→0℃水
0℃水→10℃水

所以，Q1=cm（t-t0)=2100×0.001×（0-（-10））=21J
Q2=mr=0.001×330000=330J
Q3=cm（t-t0)=4200×0.001×（10-0）=42J
Q总=Q1+Q2+Q3=21+330+42=393J

冰的熔化热r=330000J/Kg

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