Calculez masa de acid ,apoi molii,din solutie:
c/100=md/ms
3,65/100=md/500.......>md =3,65 ×5g HCL
n=m/M
n=3,65×5g/36,5g/mol=0,5 mol HCL
2 mol................1mol
2HCL+CaCO3.......>CaCL2+CO2+H2O
0,5mol..............x=0,25mol
v=n×V
m=0,25mol×22,4l/mol=................calculeaza!