Răspuns:
Explicație:
MZnS= 65+32=97----->97g/moli
MNaOH=23+16+1=40----->40g/moli
MNH4Cl=14+4+35,5=53,5----->53,5g/moli
MFe3(PO4)2=3.56 +2.31+8.16=358g/moli
Raport atomic=r.a.
Fe3(PO4)2
r.a.=3:2:8
NaNO2
r.a.=1 : 1 :2
Ca3(PO4)2
r.a.=3 :2 :8
Ca(OH)2
r.a.=1 :2 :2
Raport de masa=r.m.
HNO3
r.m.=1 :14 : 3.16=1 : 14 : 48
H2CO3
r.m.=2 : 12 : 48 [se simplif. cu2]
=1 : 6 :24
H2S
r.m.=2 : 32=1 :16
Na2SO4
r.m.=2.23 : 32 : 4.16=46 :32 : 64 [ se simplif. cu 2 ]
=23 : 16 : 32
