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There's a ( )(children) in the playground.

分类: 作业答案 • 2022-01-01 11:34:56

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There's a (child )(children) in the playground.

telegrapher's equation是什么意思
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FeS的电离中c(Fe+)*c(s2-)=6.25*10^-18,又知溶液中,[c(H+)]^2*c(S2-)=1*10^-22现将适量的FeS,投入饱和溶液中,要使溶液的c(Fe2+)达到1mol/L,应调节溶液的PH为多少?
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FeS饱和溶液中c(Fe2+)c(S2与c（H+）*c(OH-)=Kw类似,FeS饱和溶液中c（Fe2+)*c(S2-)=Ksp.常温下Ksp=8.1*10-17.理论上FeS的溶解度为?而事实上其浓度远大于这个数值,其原因可能是?
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固体氯化钠电荷如何分配,还存在正负离子吗
A:---the children ---(help) Grandma Li now?B:Yes,it's Saturday afternoon.The chlidren

There's a ( )(children) in the playground.

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