Răspuns:
Explicație:
c. Comp. proc .prin masa moleculara a KOH
- se afla masa moleculara a KOH
M=39 + 16 +1=56 -------> 56g/moli
56g KOH------------39 g K-------16 gO -------1 g H
100 g KOH-------------x---------------y------------z
x=100.39 : 56=69,64% K
y=100.16 : 56 =28,57 %O
z=100.1 : 56=1,79 % H
