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1、200克100℃的水与200克20℃的铝混合后,温度为多少?(不考虑热损失)这是一道初中热学的常规习题。解法为:设混合后的温度为 t根据 Q_吸(或 Q_放)=cm△t与 Q_吸=Q_放有1.0卡/(克·℃)×200克×(100℃-t)=0.21卡/(克·℃)×200克×(t-20℃)解得 t=86.1℃能够懂得上题的解题方法并得出正确的答数,是对学习过此章内容的初三学生的一般要求。
1. What is the temperature after mixing 200g of 100°C water with 200g of 20°C aluminum? (Not considering heat loss) This is a routine exercise for junior high school students. The solution is: Let the temperature after mixing be t according to Q_suction (or Q_release) = cmΔt and Q_suction = Q_ 1.0 card/(g · °C) × 200g × (100°C - t ) = 0.21 card / (g · °C) × 200g × (t-20 °C) Solution t = 86.1 °C can understand the problem solving method and get the correct answer, is to learn the content of this chapter General requirements for third grade students.