Расставьте пожалуйста коэффициенты!
1)H2O2+HIO3->I2+O2+H20
2)H2S+O2->SO2+H20
3)CuCl2+Zn->ZnCl2+Cu
4)KClO3+S->KCL+SO2
5)P+H2S04->H3P04+SO4+H20
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