Question

Which equations are balanced? Select four options.

-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

Answer 1

C3H8 + 5O2 → 3MgO + 2NH3

Zn + 2HCl → ZnCl2 + H2

Ca(OH)2 + 2H3PO4 → Ca3(PO4)2 + 6H2O

4Al + 3O2 → 2Al2O3

Explanation:

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