Zadaci iz neorganske hemije

Submitted by N3996 on Wed, 11/04/2015 - 10:44
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Gustina nekog nepoznatog gasa(pri n.u) iznosi 1,78g/dm3. Izracunati molekulsku masu tog gasa

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milicaradenkovic - Wed, 11/04/2015 - 11:10

p*V=n*R*T

n=p*V/R*T

ms/Mr=p*V/R*T

ms/V=p*Mr/R*T

ro=p*Mr/R*T

Mr=ro*R*T/p

Mr=1.78*1000*8.314*273.15/101.325*10(3)

Mr=39.9 g/mol i to je argon.