To balance chemical equations → the number of elements on both sides is equal.
(a). ___ C3H8O(l) + ____ O2(g) → ________ CO2(g) + ________ H2O(l)
The balanced chemical equation is:
2 C3H8O(l) + 9 O2(g) → 6 CO2(g) + 8 H2O(l)
Balance the following equations.
a. ___ C3H8O(l) + ____ O2(g) → ________ CO2(g) + ________ H2O(l)
b. _____ PH3(g) + ____ O2(g) → _______ P4O10(s) + _______ H2O(g)
c. ____ B2O3(s) + _____ HF(l) → _______ BF3(g) + _________ H2O(l)
d) ____Cu2O(s) + ______O2(g) → ______CuO(s)
e) ___CaCl2(aq) + ____K2CO3(aq) → ___ KCl(aq) + ____CaCO3(aq)
f) ___ MgO(s) + ___ Fe(s) → ___ Fe2O3(s) + ___ Mg(s)
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