Question

Раставить коэфициенты.
Fe(OH)2+H2SO4→FeSO4+H2O
Ca(OH)2+CO2→CaCO3+H2O
Al4C3+H2O→Al(OH)3+CH4

Answer 1

$1)Fe(OH) _{2}+H _{2} SO _{4} =FeSO _{4} +2H _{2} O$
$2Ca(OH) _{2} +2CO _{2} =2CaCO _{3} +2H _{2}O$
$Al _{4} C _{3} +12H _{2} O=4Al(OH) _{3} +3CH _{4}$