.13-9 已知CaCO3在500 ℃时的分解压力为101.325Pa,表面张力为 https:/img.zuoyebang.cc/zyb_c8976d1f88d75d3866054ff47a71ceff.jpg.210Ncdot (m)^-1 ,密度-|||-为 .9times (10)^3kgcdot (m)^-3 。若将 CaCO3 研磨成半径为 times (10)^-9m 的粉末,求其在500℃时的分解-|||-压力。

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