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hi friend mark it as brainliest ☺️
Step-by-step explanation:
the answer is
1.2C4H8O+15O2 gives 8 CO2+8H2O
2.it is already balanced
3.2O3 gives 3 O2
4.it is already balanced
5.it is already balanced
6.2Ni+3H2SO4 gives 3H2+Ni2(SO4)3
7.C2H4O4+OR gives 2CO2+2H2O
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