Мr=NH3.
Mr=NO2.
Mr=CaSo4.
Mr=Ca(NO3)2
Mr=H2SO3
Mr=Zn(on)2
Mr=Na3S
Mr=N2O5
Mr=PB3(PO4)3
Прошу погмогите
Mr=NO2.
Mr=CaSo4.
Mr=Ca(NO3)2
Mr=H2SO3
Mr=Zn(on)2
Mr=Na3S
Mr=N2O5
Mr=PB3(PO4)3
Прошу погмогите
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Answers & Comments
Mr(NO2)=14+16*2=46
Mr(CaSO4)=40+32+16*4=72+64=134
Mr(Ca(NO3)2)=40+14*3+16*6=82+96=178
Mr(H2SO3)=2+32+16*3=34+48=82
Mr(Zn(OH)2=65+32+2=99
Mr(Na3S)=23*3+32=69+32=101
Mr(N2O5)=14*2+16*5=28+80=108
Mr(Pb3(PO4)2=207*3+31*2+16*8=621+62+108=683+108=791