nu exista dioxid de calciu !
M,Ca(OH)2= 74g/mol
M,CaO= 56g/mol
A,Ca=40g/mol
1mol.......................1mol
Ca + 2H2O---> Ca(OH)2 + H2
40g........................74g
x...................................7,4g
x= 4g Ca
1mol.............................................1mol
CaO(oxid de calciu) + H2O---> Ca(OH)2
56g................................................74g
x.....................................................7,4g
x=5,6gCaO