Ustal współczynniki stechiometryczne w równaniach reakcji chemicznych:
Ca+ C O2 --> CaO+ C
N2 +H2 ---> NH2
Mn +O2 --> Mn2O5
Al2O3 + H2SO4 --> Al2(SO4)3 + H2O
Fe2O3+ HCl ---> FeCl3 + H2O
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2Ca+ CO2 --> 2CaO+ C
N2 +2H2 ---> 2NH2
2Mn +5O2 --> 2Mn2O5
Al2O3 + 3H2SO4 --> Al2(SO4)3 + 3H2O
Fe2O3+ 6HCl ---> 2FeCl3 + 3H2O
2Ca+CO{2}--2CaO+C
N{2}+2H{2}--2NH{2}
4Mn+5O{2}---2Mn{2}O{5}
3Al{2}O{3}+9H{2}SO{4}---3Al{2}(SO{4}){3}+18H{2}O
Fe{2}O{3}+6HCl---2FeCl{3}+3H{2}O