i need help solving these chemical equations...???

Question

13. When healed, mercury(II) oxide, HgO, decomposes to form mercury and oxygen. Through this reaction, Joseph Priestley demonstrated the existence of oxygen in 1774. Write balanced equation for decomposition of mercury(II) oxide.
14. Methanol, CH3 OH, decomposes to form carbon monoxide, CO, & hydrogen gas, H2. Write balanced equation for this decomposition reaction.

::Write the balanced chemical equation &Identify type of reaction::
15. sulfur + oxygen >>>> sulfur dioxide (g)
16. zinc + sulfuric acid (H2S04) >>>> zinc sulfate (aq) + hydrogen (g)
17. hydrogen + nitrogen >>>> ammonia (g)
18. hydrogen + chlorine >>>> hydrogen chloride (g)
19. carbon + water(steam) >>>> carbon monoxide (g) + hydrogen (g)
20. calcium oxide + water >>>> calcium hydroxide (aq)
21. phosphorus + oxygen >>>> diphosphorus pentoxide (molecular formula, P4O10) (s)
22. hydrochloric acid(HCl) + sodium hydroxide >>>> sodium chloride (aq) + water

Answer 1

I need help solving these chemical equations...???
13. When healed, mercury(II) oxide, HgO, decomposes to form mercury and oxygen. Through this reaction, Joseph Priestley demonstrated the existence of oxygen in 1774. Write balanced equation for decomposition of mercury(II) oxide.

2HgO=2Hg+O2

14. Methanol, CH3 OH, decomposes to form carbon monoxide, CO, & hydrogen gas, H2. Write balanced equation for this decomposition reaction.

CH3OH=CO+2H2

::Write the balanced chemical equation &Identify type of reaction::
15. sulfur + oxygen >>>> sulfur dioxide (g)

S+O2=SO2 combinationreaction

16. zinc + sulfuric acid (H2S04) >>>> zinc sulfate (aq) + hydrogen (g)

Zn+H2SO4=ZnSO4+H2 displacement reaction

17. hydrogen + nitrogen >>>> ammonia (g)

N2+3H2=2NH3 combinatiobn reaction(endothermic)

18. hydrogen + chlorine >>>> hydrogen chloride (g)

H2+Cl2=2HCl chemical combination

19. carbon + water(steam) >>>> carbon monoxide (g) +
hydrogen (g)

C+H2O=CO+H2 displacement reaction /redox reaction

20. calcium oxide + water >>>> calcium hydroxide (aq)

CaO+H2O=Ca(OH)2 exothermic reaction

21. phosphorus + oxygen >>>> diphosphorus pentoxide (molecular formula, P4O10) (s)

4P+5O2=P4O10 combination
22. hydrochloric acid(HCl) + sodium hydroxide >>>> sodium chloride (aq) + water

HCl+NaOH=NaCl+H2O double displacement

Answer 2

for #13) 2 mercury oxide >>>> 2 mercury + 1 oxygen
#14) 1 CH3 OH >>>> 1 CO + 2 H2
#15) 1 sulfur + 1 oxygen >>>> 1 sulfur dioxide synthesis reaction
#16) 1 zinc + 1 sulfuric acid >>>>1 zinc sulfate+ 1 hydrogen single displacement reaction
#17) 3 hydrogen + 1 nitrogen >>>>2 ammonia synthesis reaction
#18)1 hydrogen + 1 chlorine >>>>>2 hydrogen chloride synthesis reaction
#19)1 carbon + 1 water >>>>1 carbon monoxide +1 hydrogen combustion reaction
#20)1 calcium oxide + 1 water >>>>1 calcium hydroxide
#21)4 phosphorus + 5 oxygen >>>>1 diphosphorus pentoxide synthesis reaction
#22)1 hydrochloric acid +1sodium hydroxide >>>>1 sodium chloride + 1 water double displacement reaction

Answer 3

It doesn't help you to have someone else do them all. I'll do a couple, you do the rest.

13. Free oxygen is in molecules of 2 atoms, so we have to write O2. But HgO --> Hg + O2 doesn't balance, so we need to put 2HgO on the left.
2HgO --> Hg + O2 still doesn't balance. There are 2 atoms of Oxygen on the left, and two on the right, so that's OK, but the Hg are still out of balance. Easily fixed:

2HgO --> 2Hg + O2


14. CH3 OH --> CO + H2 Not as difficult as I expected. The left side has one C, one O and four H. The only thing wrong is that the right side has only two H. So put a 2 in front of H2 and it's balanced.

Answer 4

13. HgO > Hg+O
14. CH3OH > CO+2H2
15.S+O >SO it could be a synthesis or oxidation reaction
16.Zn+H2SO4 > ZnSO4+2H displacement reaction
17. H+N > NH synthesis reaction
18. H+Cl > HCl synthesis reaction
19. C+H2O > CO+2H2 it could be oxidation or displacement reaction
20. 2ClO+2H2O > 2Cl+4OH displacement reaction
21. 4P+10O > P4O10 synthesis reaction
22. HCl+NaOH > NaCl+H2O oxidation or displacement reaction