Ответ:
HNO3 = 1+14+16*3= 63
H3PO4 = 1*3+31+16*4=98
CaCl2 = 40+35.5*2= 111
Na2SO4 = 23*2+32+16*5=142
CaCO3 = 40+12+16*3= 100
Fe2O3 = 56*2+16*3= 160
Fe2(SO4)3= 56*2+32*3+16*4*3=400
KMnO4= 39+55+16*4= 158
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Ответ:
HNO3 = 1+14+16*3= 63
H3PO4 = 1*3+31+16*4=98
CaCl2 = 40+35.5*2= 111
Na2SO4 = 23*2+32+16*5=142
CaCO3 = 40+12+16*3= 100
Fe2O3 = 56*2+16*3= 160
Fe2(SO4)3= 56*2+32*3+16*4*3=400
KMnO4= 39+55+16*4= 158