C+O₂=CO₂ Masa molara CO₂=12+2*16=44g/mol x=masa de CO₂ obtinuta x=2.4*44/12 x=8.8g CO₂ CO₂+Ca(OH)₂=CaCO₃+H₂O Masa molara CaCO₃=40+12+3*16=100g/mol Masa molara H₂O=2*1+16=18g/mol y=masa de CaCO₃ obtinuta y=8.8*100/44 y=20g CaCO₃ 1mol..........................100g CaCO₃ z moli........................20g z=20*1/100=0.2moli CaCO₃ w=masa de H₂O obtinuta w=8.8*18/44 w=3.6g H₂O 1mol...................18g H₂O q moli..................3.6 q=3.6*1/18=0.2 moli H₂O