Plemeniti gasovi

Submitted by NikolaM on Wed, 03/26/2014 - 17:47
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Koliko je grama He,a koliko grama H2 potrebno za punjenje balona 500cm3?

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milicaradenkovic - Wed, 03/26/2014 - 17:56

n=V/Vm=0.5/22.4=0.0223 mol

n(He)=n=0.0223 mol

m(He)=n(He)*Mr=0.0223*4=0.0892 g

n(H2)=n=0.0223 mol

m(H2)=n(H2)*Mr=0.0223*2=0.0446 g