Question

Раставьте коэффиценты, и укажите тип химич. реакций. AL+O2=AL2O3 MNO2+H2=MN+H2O H2O2=H2+O2 HNO3+Fe(OH)3=A2O+Fe(NO3)3

Answer 1

4AL+3O2=2AL2O3- совмещение
MnO2+2H2=Mn+2H2O-замещение
H2O2=H2+O2- разложение
3HNO3+Fe(OH)3=3H2O+Fe(NO3)3-замещение
С типами реакций не уверена, лучше перепроверь)

Answer 2

4AL+3O2=2AL2O3 - соединение
MNO2+2H2=MN+2H2O - замещения
H2O2=H2+O2 - разложения
HNO3+Fe(OH)3=A2O+Fe(NO3)3 (?) - обмена

Answer 3

Chemical Reactions and Balancing Equations

Let's break down the chemical equations and balance them one by one.

1. Al + O2 = Al2O3 - This is a synthesis reaction where aluminum reacts with oxygen to form aluminum oxide. - The balanced equation is: ``` 4Al + 3O2 = 2Al2O3 ```

2. MnO2 + H2 = Mn + H2O - This is a single displacement reaction where manganese dioxide reacts with hydrogen to form manganese and water. - The balanced equation is: ``` MnO2 + 4H2 = Mn + 4H2O ```

3. H2O2 = H2 + O2 - This is a decomposition reaction where hydrogen peroxide breaks down into water and oxygen. - The balanced equation is: ``` 2H2O2 = 2H2O + O2 ```

4. HNO3 + Fe(OH)3 = Fe(NO3)3 + H2O - This is a double displacement reaction where nitric acid reacts with iron(III) hydroxide to form iron(III) nitrate and water. - The balanced equation is: ``` 3HNO3 + Fe(OH)3 = Fe(NO3)3 + 3H2O ```

I hope this helps! If you have any more questions about chemistry or anything else, feel free to ask!