Kiseonik

Submitted by Hemicarka5 on Wed, 01/29/2014 - 19:58
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Izracunajte masu kiseonika u 1m3 vazduha ako je zapreminski udio kiseoinika u vazduhi 21%.

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milicaradenkovic - Wed, 01/29/2014 - 20:10

V(O2)=w(O2)*V(vazduha)

V(O2)=0.21*1=0.21 m3

n(O2)=V(O2)/Vm=0.21/22.4*10(-3)=9.375 mol

m(O2)=n(O2)*Mr=9.375*32=300 g