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dndtkn即物质分解的速率跟物质本身的浓度成一次方程负号表示被分解k为常数结果一 题目 dN/dt=-KN,即物质分解的速率跟物质本身的浓度成一次方程,负号表示被分解,K为常数.求N关于t的积分.t=0时,N=Ns. 答案 ∫(1/N)dN=∫(-K)dtlnN=-Kt+CN=e^(-Kt+C)N=Ce^(-Kt)∵t=0 N=C=Ns∴N=Ns*e^(-Kt...
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