Question

1. Ba + O2 → BaO 2.Fe(OH)3 + HCl → FeCl3 + H2O 3.Na + S → Na2S 4.Fe + O2 → Fe3O4 5.C + O2 → CO2 6.CH4 → C2H2 + H2 7.Ca + HCl → CaCl2 + H2 8.K + S → K2S 9.HNO3 + CaO → Ca(NO3)2 + H2O 10.Fe + O2 → Fe2O3 11.BaO + H2SO4 → BaSO4 + H2O 12.Fe + Cl2 → FeCl3

Answer 1

Ответ:

2Ba+O2=2BaO

Fe(OH)3+3HCl=FeCl3+3H2O

2Na+S=Na2S.

3Fe+2O2=Fe3O4

C+O2=CO2

2CH4=C2H2+3H2

Ca+2HCl=CaCl2+H2

2K+S=K2S

2HNO3+CaO=Ca(NO3)2+H2O

4Fe+3O2=2Fe2O3

BaO+H2SO4=BaSO4+H2O

2Fe+3Cl2=2FeCl3

Answer 2

It looks like you've provided a list of chemical equations. These equations represent various chemical reactions. Here's a breakdown of each equation:

1. Ba + O2 → BaO This is the reaction between barium (Ba) and oxygen (O2) to form barium oxide (BaO).

2. Fe(OH)3 + HCl → FeCl3 + H2O This equation represents the reaction between iron(III) hydroxide (Fe(OH)3) and hydrochloric acid (HCl) to produce iron(III) chloride (FeCl3) and water (H2O).

3. Na + S → Na2S This equation shows the reaction between sodium (Na) and sulfur (S) to form sodium sulfide (Na2S).

4. Fe + O2 → Fe3O4 This is the reaction between iron (Fe) and oxygen (O2) to produce iron(II,III) oxide (Fe3O4), also known as magnetite.

5. C + O2 → CO2 This represents the combustion of carbon (C) in oxygen (O2) to produce carbon dioxide (CO2).

6. CH4 → C2H2 + H2 This equation represents the decomposition of methane (CH4) into acetylene (C2H2) and hydrogen gas (H2).

7. Ca + HCl → CaCl2 + H2 This equation shows the reaction between calcium (Ca) and hydrochloric acid (HCl) to produce calcium chloride (CaCl2) and hydrogen gas (H2).

8. K + S → K2S This is the reaction between potassium (K) and sulfur (S) to form potassium sulfide (K2S).

9. HNO3 + CaO → Ca(NO3)2 + H2O This equation represents the reaction between nitric acid (HNO3) and calcium oxide (CaO) to produce calcium nitrate (Ca(NO3)2) and water (H2O).

10. Fe + O2 → Fe2O3 This is the reaction between iron (Fe) and oxygen (O2) to form iron(III) oxide (Fe2O3), commonly known as rust.

11. BaO + H2SO4 → BaSO4 + H2O This equation shows the reaction between barium oxide (BaO) and sulfuric acid (H2SO4) to produce barium sulfate (BaSO4) and water (H2O).

12. Fe + Cl2 → FeCl3 This represents the reaction between iron (Fe) and chlorine gas (Cl2) to form iron(III) chloride (FeCl3).

These are chemical reactions involving various elements and compounds, each following different chemical principles and stoichiometry.