Розставте коефіцієнти в схемах хімічних рівнянь 1. C3H6+O2=Co2+H20
2. Ca3 (Po4)2+HBr=CaBr2+H3PO4
3. Fe2 (So4)3+HCI=FeCI3+H2So4
4.SO2+NaOH=Na2So4+H2O
5. KOH+H2SO4=K2SO4+H2O
6. H2S+O2=H2O+SO2
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