Fosfor

Submitted by Hemicarka5 on Wed, 01/22/2014 - 19:01
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U kostima se nalazi oko 58% Ca3(PO4)2.Izracunajte koliko kg fosfora ulazi u sastavm 10kg kostiju.

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milicaradenkovic - Wed, 01/22/2014 - 20:16

w=ms/mr

ms=w*mr=10000*0.58=5800 g Ca3(PO4)2

5800 g-------------------310 g/mol

x g------------------------62 g/mol

x=62*5800/310=1160 g=1.16 kg P