Răspunsuri

2014-02-21T09:13:29+02:00
M=Masa moleculara
M K3PO4=39*3+30+16*4=117+30+64=211
M Mg(NO3)2=24+14*2+16*6=24+28+96=148
Raportul atomic:
K:P:O=3:1:4
Mg:N:O=1:2:6
Raport masic:
K:P:O=117:30:64
Mg:N:O=24:28:96
C%=md*100\ms
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