Răspuns:
M,CaCO3=100g/mol
M,CaO=56g/mol
1mol.....................1mol sau, in grame
CaCO3 ---------> CaO + CO2
100g....................56g
1000g...................x=
x=560g masa teoretica
m=448g masa practica
560g masa practica...........448gmasa teoretica
100g............................................. 80g---> 80%
Explicație: