Zadatak

Submitted by shaolin on Sat, 03/01/2014 - 15:11
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Izracunaj masu jednog atoma i masu jednog molekula azota

Unaprijed zahvalan!

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milicaradenkovic - Sat, 03/01/2014 - 15:23

1 mol-------------------------6*10(23)

x mol----------------------------1

x=1*1/6*10(23)=1.67*10(-24) mol N

m(N)=n(N)*Mr=1.7*10(-24)*14=2.38*10(-23) g

n(N2)=n(N)/2=1.7*10(-24)/2=8.5*10(-25) mol

m(N2)=n(N2)*Mr=8.5*10(-25)*28=2.38*10(-23) g