Question

Calculati masele moleculare ale urmatoarelor substante: ACID SULFURIC (H2 S04), ACID CLORHIDRIC (HCI),
HIDROXID DE POTASIU (KOH), CARBONAT DE CALCIU (CaCO3), clorura de magneziu (MgCl2), carbonat de
magneziu (MgCO3).
Se dau masele atomice:
A(CI) = 35,5
A(H)=1
A(S)= 32
AO) =16
A(K)=39
A(Ca)= 40
A(C)= 12
A(Mg) =24

Answer 1

Răspuns:

MH2SO4 =2×1+32+4×16=98g/mol

MHCl =1+35,5=36,5g/mol

MKOH =39+16+1=56g/mol

MCaCO3 =40+12+3×16=100g/mol

MMgCl2 =24+2×35,5=95g/mo

lMMgCO3=24+12+3×16=84g/mol