Complete the word equation
Then write the balanced equation.
27. calcium + oxygen >>>>
28. copper(II) carbonate>>>>
29. aluminum + hydrochloric acid >>>>
30. potassium iodide + chlorine >>>>
31. barium chloride + sodium sulfate >>>>
32. copper + silver nitrate >>>> copper(II) nitrate +
33. barium hydroxide + sulfuric acid>>>>
34. zinc sulfate + ammonium sulfide>>>>
35. sodium + water >>>>
36. magnesium + sulfuric acid >>>>
37. Mercury(II) oxide >>>>
2006-12-29 10:45:09 · 5 answers · asked by truckin_90 2 in Science & Mathematics ➔ Chemistry
27. calcium oxide
2 Ca + O2 ---> 2 CaO
28. copper(II) oxide + carbon dioxide
CuCO3 ---> CuO + CO2
29. aluminium chloride + hydrogen
2 Al + 6 HCl ---> 2 AlCl3 + 3 H2
30. potassium chloride + iodine
2 KI + Cl2 ---> 2 KCl + I2
31. barium sulphate + sodium chloride
BaCl2 + Na2SO4 ---> BaSO4 + 2 NaCl
32. silver
Cu + 2 AgNO3 ---> Cu(NO3)2 + 2 Ag
33. barium sulphate + water
Ba(OH)2 + H2SO4 ---> BaSO4 + 2 H2O
34. zinc sulphide + ammonium sulphate
ZnSO4 + (NH4)2S ---> ZnS + (NH4)2SO4
35. sodium hydroxide + hydrogen
2 Na + 2 H2O ---> 2 NaOH + H2
36. magnesium sulphate + hydrogen
Mg + H2SO4 ---> MgSO4 + H2
37. mercury + oxygen
2 HgO ---> 2 Hg + O2
2006-12-29 12:13:23 · answer #1 · answered by deedsallan 3 · 0⤊ 0⤋
27. calcium oxide Ca + O2 ===> CaO
28. Don't understand the question.
29. Aluminum chloride 2Al + 6HCl ===> 2AlCl3 + 3H2
30. potassium chloride + iodine 2KI + Cl2 ===> 2KCl + I2
31. Barium sulfate + sodium chloride BaCl2 + Na2SO4 ===> BaSO4 + 2NaCl
32. Silver metal Cu + 2AgNO3 ===> Cu(NO3)2 + Ag
33. Barium sulfate + water Ba(OH)2 + H2SO4 ===> BaSO4 + 2H2O
34. Zinc sulfide + ammonium sulfate ZnSO4 + (NH4)2SO4 ===> ZnS + (NH4)2SO4
35. Sodium hydroxide + hydrogen 2Na + 2H2O ===>2NaOH + H2
36. Magnesium sulfate + hydrogen Mg + H2SO4 ===> MgSO4 + H2
37. I can only suppose that you want to heat mercuric oxide. Mercury + oxygen gas. 2HgO + heat ==> 2Hg + O2
2006-12-29 11:19:44 · answer #2 · answered by steve_geo1 7 · 0⤊ 0⤋
27. calcium + oxygen >>>> 2Ca + O2 = 2CaO
28. copper(II) carbonate>>>> Cu(II) + CO3 = CuO + CO2
29. aluminum + hydrochloric acid >>>> 2Al + 6HCl(aq) = 3H2 + 2AlCl3
30. potassium iodide + chlorine >>>> 2KI + CL2 = 2KCL + 2I
31. barium chloride + sodium sulfate >>>> BaCl2 + Na2SO4 = 2NaCl + BaSO4
32. copper + silver nitrate >>>> Cu + AgNO3 = CuNO3 + Ag (impossible to balance b/c u dont know what charge Cu is)
33. barium hydroxide + sulfuric acid>>>> Ba(OH)2 + H2SO4 = 2H2O + BaSO4
34. zinc sulfate + ammonium sulfide>>>> ZnSO4 + (NH4)2S = ZnS + (NH4)2SO4
35. sodium + water >>>> (i love this reaction) 2Na + 2H2O = 2NaOH + H2
36. magnesium + sulfuric acid >>>> Mg +H2SO4 = H2 + MgSO4
37. Mercury(II) oxide >>>> 2HgO = 2Hg + O2
2006-12-29 11:57:43 · answer #3 · answered by sarge_247 2 · 0⤊ 0⤋
I can give you the balanced equations because English is not my native language - I'm Greek
27. 2Ca + O2 --> 2CaO
28 CuCO3 --> CuO + CO2 (thermal decomposition)
29. 2Al + 6HCl --> 2AlCl3 + 3H2
30. 2KI + Cl2 --> 2KCl + I2
31. BaCl2 + Na2SO4 --> BaSO4 + 2NaCl
32. Cu + 2AgNO3 --> Cu(NO3)2 + 2Ag
33. Ba(OH)2 + H2SO4 --> BaSO4 + 2H2O
34. ZnSO4 + (NH4)2S --> ZnS + (NH4)2SO4
35. 2Na + 2H2O --> 2NaOH + H2
36. Mg + H2SO4 --> MgSO4 + H2
37 2HgO --> 2Hg + O2 (thermal decomposition)
2006-12-29 12:00:32 · answer #4 · answered by Dimos F 4 · 0⤊ 0⤋
HC2H3O2 + NaOH ---> NaC2H3O2 + H2O acetic acid + sodium hydroxide ---> sodium acetate + water Your Welcome.
2016-03-29 00:12:12 · answer #5 · answered by Anonymous · 0⤊ 0⤋