+ FeO
%mFe = \(\frac{56}{56+16}.100\%=77,78\%\) %mO = 100% - 77,78% = 22,22%+ CO2
%mC = \(\frac{12}{12+16.2}.100\%=27,27\%\) %mO = 100% - 27,27% = 72,73%+ CaCO3
%mCa = \(\frac{40}{40+12+16.3}.100\%=40\%\) %mC = \(\frac{12}{40+12+16.3}.100\%=12\%\) %mO = 100% - 40% - 12% = 48%MFeO= 72 g/mol
%Fe = ( 56 .100):72 =77,7%
%O = (16.100):71 =22,3 %
MCO2=44g/mol
%C = (12.100): 44= 27,27%
%O = ( 32.100):44 = 72,73%
MCaCO3=100g/mol
%Ca = ( 40.100):100 = 40%
%C = (12.100):100 = 12%
%O = (48 . 100):100 = 48%