求公式,What is the molar mass of a gas sample having a density
求公式,
What is the molar mass of a gas sample having a density of 2.80 g/L,when its temperature is 400K,and its pressure is 0.782 atm?
我想知道摩尔质量和温度和压强和密度之间的关系,或许不是这几个量,可以转换得到吧,反正应该有个公式的吧,请告诉下.
还有像A 14.1 g gas sample has a volume of 4.00 L and a temperature of 25oC.If its pressure is 1490 torr,what is its molar mass，这都是一个类型的吧
What is the molar mass of a gas sample having a density of 2.80 g/L,when its temperature is 400K,and its pressure is 0.782 atm?
我想知道摩尔质量和温度和压强和密度之间的关系,或许不是这几个量,可以转换得到吧,反正应该有个公式的吧,请告诉下.
还有像A 14.1 g gas sample has a volume of 4.00 L and a temperature of 25oC.If its pressure is 1490 torr,what is its molar mass，这都是一个类型的吧
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p1v1/T1=p2v2/T2
0.782*1/400=1*v2/293.15
v2=0.782*293.15/400=0.5731L
标准状态下的气体摩尔体积为22.4L
所以摩尔质量=22.4/0.573*2.80=109.46g/mol
0.782*1/400=1*v2/293.15
v2=0.782*293.15/400=0.5731L
标准状态下的气体摩尔体积为22.4L
所以摩尔质量=22.4/0.573*2.80=109.46g/mol
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