Se calculeaza puritatea CaCO3------>p=80 la suta [100- 20 imp.=80 ]
p=mp.100:mt
mp=p.mt :100
mp=80.200:100=160 kg CaCO3 pur
Se calc. MCaCO3=40+12=3.16=100------->1mol=100g
100 g CaCO3------------12 g C
160 g CaCO3------------Xg C
X=160.12:100=19,2 g C