Răspuns:
Explicație:
MH20= 2.AH + AO
=2.1 +16=18---------> 1MOL=18g -----> 18g/moli
MS2O4= MSO2 = AS + 2AO
=32 + 2.16
=64----------> 64g/moli
MN2O= 2AN + AO
= 2.14 +16
= 44 -------->44g/moli
MNaCl=23 + 35,5
=58,5--------> 58,5g/moli
MNaOH=23 +16 +1
=40 ---------> 40g/moli
