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18 November, 12:59

Which equations are balanced? Check all that apply.

Mg3N2 + H2O → 3MgO + 2NH3

C3H8 + 5O2 → 4H2O + 3CO2

Zn + 2HCl → ZnCl2 + H2

3Ca (OH) 2 + 2H3PO4 → Ca3 (PO4) 2 + 6H2O

3H2SO4 + 2Fe → Fe2 (SO4) 3 + H2

4Al + 3O2 → 2Al2O3

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  1. 18 November, 13:09
    +1
    It is Zn+2HCl ... ZnCl2+H2.

    3Ca (OH) 2+2H3PO4 ... Ca3 (PO4) 2+6H2O
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