Răspuns :
Răspuns:CaCO3=CaO+CO2 M CaCO3=40+12+3.16=100g/mol MCao=40+16=56g/mol 5kg Cao......xkg CaCO3..........ym3CO2 56kg Cao ...100kg CaCO3.......22,4m3 CO2 x=5.100/56=8,928kg pur din 10kg CaCO3 impur..........8,928kg pur 100..........................................a% a%=100.8,928/10=89,28% y=volumul de CO2=5.22,4/56=2m3CO2=2000dm3
Explicație: