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Answers for Balanced Equations

  1. Balance the reactions below by inspection:

    1. 2 Ca(s) + O2(g) ---------> 2 CaO(s) addition

    2. CaSO4(s) + 4 C(s)-----> CaS(s) + 4 CO(g)

    3. C3H8(g) + 5 O2(g) ------->3 CO2(g) + 4 H2O(g)

    4. P2O5(s) + 3 H2O(l) -------> 2 H3PO4(aq) addition

    5. Na2O(s) + H2O(l) -----> 2 NaOH(aq)

    6. 2 C4H10(g) + 13 O2(g) ------>8 CO2(g) + 10 H2O(l)

    7. 3 Mg(OH)2(s) + 2 H3PO4(aq) -----> Mg3(PO4)2(s) + 6 H2O(l)

    8. 2 HCl(aq) + Ba(OH)2(aq) ----> BaCl2(aq) + 2 H2O(l)

    9. 2 HgO(s) -----> 2 Hg(l) + O2(g)

    10. 2 AgNO3(aq) + BaCl2(aq) ---> 2 AgCl(s) + Ba(NO3)2(aq)

    11. 2 H2O2(aq) ------> 2 H2O(l) + O2(g)

    12. C6H12O6(s) -------> 6 C(s) + 6 H2O(g)

    13. HC2H3O2(aq) + NaOH(aq) -----> NaC2H3O2(aq) + H2O(l)