Balance the three equations below by adding the coefficient next to the element(s).

Cr2O3 + 3Mg —> __Cr + 3MgO

__H2 + 1O2 —> 2H2O

2 NaBr + Cl2 —> __NaCl + Br2

Balance the three equations below by adding the coefficient next to the elements Cr2O3 3Mg gt Cr 3MgO H2 1O2 gt 2H2O 2 NaBr Cl2 gt NaCl Br2 class=