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C2H2(g)+ 402(g)+2CO2(g)+2H20(g)

Fe(OH)3 (s) + H3PO4(aq) -+ FePO4(s) + 3H2O (1)
2HCl(aq) +Cr(s) -+ CrCl2(aq) + H2 (g)

None of the above

Change the coefficient(s) to correctly balance the unbalanced equation.

C2H2(g) + 402(g) -+ 2C02(g) + 2H20(g)

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C2H2(g) + 2O2(g) -+ 2CO2(g) + 2H2O(g)

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