Răspuns:
Explicație:
-se afla md sol. de Ca(OH)2
md=c . ms : 100
md=240 .10 : 100=24 g Ca(OH)2
24g xg
Ca( OH)2 + CO2= CaCO3 + H2O
74g 44g
x=24 . 44 : 74=14,27 g CO2
n=m : M
n=14,27g :44g/moli=0,32 moli CO2
MCO2=12+2.16=44------>44g/moli
MCa(OH)2= 40 +2.16 +2=74------->74g/moli