August 2021 0 4 Report
плииииз помогите
1)C + H2 -> CH4
2)FeO + H2 -> Fe + H2O
3)HgO ->Hg+O2
4)KOH+H2SO4 ->K2SO4+H2O

1)Mg+? ->MgO
2)Fe(OH)3 ->Fe2O3+?
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