We’re being asked to balance the given equations.
Recall that when balancing chemical equations, we have to make sure that the number of elements on both sides is equal with the lowest whole number coefficients.
___ Br2 + ___ LiF → ___ LiBr + ___ F2
Balance Br: We have 2 Br on the reactant side and 1 Br on the product side – add a coefficient of 2 to LiBr:
Using your newly-found equation balancing knowledge, balance the following equations:
1) ___ Br2 + ___ LiF → ___ LiBr + ___ F2
2) ___ H3PO4 + ___ Fe(OH)2 → ___ H2O + ___ Fe3(PO4)2
3) ___ C3H7OH + ___ O2 → ___ CO2 + ___ H2O
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