Oblicz masy cząsteczkowe :
Hg2s
Pb3(PO4)2
Mg(NO2)2
FeCl3
MAM 15 MINUT!
Hg2S=2*201+32=434uPb3(PO4)2=207*3+2*31+8*16=621+62+128=811 uMg(NO2)2=24+2*14+4*16=24+28+64=116uFeCl3=56+3*35,5=162,5u
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Hg2S=2*201+32=434u
Pb3(PO4)2=207*3+2*31+8*16=621+62+128=811 u
Mg(NO2)2=24+2*14+4*16=24+28+64=116u
FeCl3=56+3*35,5=162,5u