Broj atoma

Submitted by Alexstrasuz on Thu, 10/02/2014 - 16:51
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Izracunati broj atoma zeljeza u jednoj molekuli hemoglobina koja ima Mr=67000 a maseni udio zeljeza je 0.333%

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milicaradenkovic - Thu, 10/02/2014 - 17:19

w(Fe)=x*Ar(Fe)/Mr

0.00333=x*56/67000

56*x=67000*0.00333

56*x=223.11

x=223.11/56=4 atoma Fe

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Alexstrasuz - Thu, 10/02/2014 - 17:32

Ne moze se uradit preko n=m/M=N/Na