Question

Calculați masele moleculare ale următoarelor substanțe:
Cl 2 , HNO 3 , Al(OH) 3 , Mg 3 (PO 4 ) 2.
URGENT! DAU COROANA!!!!!

Answer 1

Răspuns:

MCl2=2×ACl=2×35,5=71

MHNO3 =AH+AN+3×AO=1+14+3×16=63

MAl(OH)3=AAl+3×AO13×AH=27+3×16+3×1=76

MMg3(PO4)2=3×AMg +2×AP+8×AO=3×24+2×31+8×16=262