Răspuns:
Explicație:
MH2CO3=2 + 12 + 3 .16 = 62--------> 62g/moli
MAgNO3= 108 + 14 +3 . 16 =170------> 170g/moli
MZn( OH)2 = 64 + 2 .16 + 2 = 98-------> 98g/moli
MFe2O3= 2 . 56 + 3 .16 = 160-------> 160g/moli
MCaCl2 = 40 + 2 . 35,5 = 111 -----> 111g/moli
MCa3(PO4)2 = 3 .40 + 2 . 31 + 8 .16 = 310------->310g/moli