问答题

在90km高空，大气的压强为0.180Pa，密度为3.20×10−6kg/m3。求该处的温度和分子数密度，空气的摩尔质量取29.0g/mol。
该处的温度为:[填空1]k；结果保留三位有效数字
该处的分子数密度为:[填空2]×1019mol/m3；结果保留三位有效数字

答案： 1、196 2、6.64

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