Question

Заплони пропуски и расставь коэффициэнты C + __=CO2 P + __=P4O10 AL + __= AL2O3 CH4+___=CO2 + ___ ____(при воздействии температуры)=СО2+Н2О Zn(OH)2(при воздействии температуры)= ___+___ ____(при воздействии температуры)= Fe2O3+ H2O __(при воздействии температуры)= CAO+CO2

Answer 1

C + O2 = CO2
4P + O2 = P2O5
4Al + 3O2 = 2Al2O3
CH4 + 2O2 = CO2↑ + 2H2O
H2CO3 = H2O + CO2↑
Zn(OH)2 = ZnO + H2O
2Fe(OH)3 = Fe2O3 + 3H2O
CaCO3 = CaO + CO2↑

Answer 2

Balancing Chemical Equations

To balance the given chemical equations, we need to ensure that the number of atoms of each element is the same on both sides of the equation. Let's go through each equation and balance them one by one.

1. C + O2 = CO2

To balance this equation, we need to have the same number of carbon and oxygen atoms on both sides. Since there is only one carbon atom on the left side, we need to put a coefficient of 1 in front of CO2. This gives us:

C + O2 = 1CO2

2. P + O2 = P4O10

To balance this equation, we need to have the same number of phosphorus and oxygen atoms on both sides. Since there is only one phosphorus atom on the left side, we need to put a coefficient of 4 in front of P4O10. This gives us:

P + 5O2 = P4O10

3. 2Al + 3O2 = 2Al2O3

To balance this equation, we need to have the same number of aluminum and oxygen atoms on both sides. Since there are 2 aluminum atoms on the left side, we need to put a coefficient of 2 in front of Al2O3. This gives us:

4Al + 3O2 = 2Al2O3

4. CH4 + 2O2 = CO2 + 2H2O

To balance this equation, we need to have the same number of carbon, hydrogen, and oxygen atoms on both sides. Since there is only one carbon atom on the left side, we need to put a coefficient of 1 in front of CO2. This gives us:

CH4 + 2O2 = CO2 + 2H2O

5. Zn(OH)2 = ZnO + H2O

To balance this equation, we need to have the same number of zinc, hydrogen, and oxygen atoms on both sides. Since there is only one zinc atom on the left side, we need to put a coefficient of 1 in front of ZnO. This gives us:

Zn(OH)2 = ZnO + H2O

6. Fe2O3 + 3H2O = Fe(OH)3

To balance this equation, we need to have the same number of iron, hydrogen, and oxygen atoms on both sides. Since there are 2 iron atoms on the left side, we need to put a coefficient of 2 in front of Fe(OH)3. This gives us:

Fe2O3 + 3H2O = 2Fe(OH)3

7. CaO + CO2 = CaCO3

To balance this equation, we need to have the same number of calcium, carbon, and oxygen atoms on both sides. Since there is only one calcium atom on the left side, we need to put a coefficient of 1 in front of CaCO3. This gives us:

CaO + CO2 = CaCO3

Now, all the chemical equations are balanced.