Question

Помогите пожалуйста с химией! Расставтье коэффиценты.  Na +   Cl2 →  NaCl N +  O2 →  NO Al +  S → Al2S3 H2O →   H2 + O2 Cr +  Cl2 →  CrCl3 Na +   O2 → ....... Al +  Cl2 →  ....... K +  S→  ....... Ca +   O2 → ....... H2 +  Cl2 → ....... ​

Answer 1

Ответ:

2Na + Cl2 =2NaCl

2N + O2= 2 NO

2Al + 3S= Al2S3

2H2O= 2H2 + O2

2 Cr + 3Cl2= 2CrCl3

4Na+ O2= 2 Na2O

2Al + 3Cl2= 2AlCl3

2K+ S= K2S

2Ca + O2= 2CaO

H2+ Cl2= 2HCl

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 one by one:

1. Na + Cl2 → NaCl

To balance this equation, we need to ensure that the number of sodium (Na) atoms and chlorine (Cl) atoms is the same on both sides. Since there is only one sodium atom on the left side and one on the right side, we don't need to do anything to balance the sodium atoms. However, there are two chlorine atoms on the right side (Cl2), so we need to put a coefficient of 2 in front of NaCl to balance the chlorine atoms.

The balanced equation is: 2Na + Cl2 → 2NaCl.

2. N2 + O2 → 2NO

To balance this equation, we need to ensure that the number of nitrogen (N) atoms and oxygen (O) atoms is the same on both sides. There are two nitrogen atoms on the left side (N2), so we need to put a coefficient of 2 in front of NO to balance the nitrogen atoms. There are also two oxygen atoms on the right side (O2), so the equation is already balanced in terms of oxygen atoms.

The balanced equation is: N2 + O2 → 2NO.

3. Al + S → Al2S3

To balance this equation, we need to ensure that the number of aluminum (Al) atoms and sulfur (S) atoms is the same on both sides. There is one aluminum atom on the left side and two on the right side, so we need to put a coefficient of 2 in front of Al to balance the aluminum atoms. There is one sulfur atom on both sides, so the equation is already balanced in terms of sulfur atoms.

The balanced equation is: 2Al + 3S → Al2S3.

4. H2O → H2 + O2

To balance this equation, we need to ensure that the number of hydrogen (H) atoms and oxygen (O) atoms is the same on both sides. There are two hydrogen atoms on the left side (H2O), so we need to put a coefficient of 2 in front of H2 to balance the hydrogen atoms. There are also two oxygen atoms on the right side (O2), so the equation is already balanced in terms of oxygen atoms.

The balanced equation is: H2O → 2H2 + O2.

5. Cr + Cl2 → CrCl3

To balance this equation, we need to ensure that the number of chromium (Cr) atoms and chlorine (Cl) atoms is the same on both sides. There is one chromium atom on both sides, so we don't need to do anything to balance the chromium atoms. However, there are two chlorine atoms on the right side (Cl2), so we need to put a coefficient of 3 in front of CrCl3 to balance the chlorine atoms.

The balanced equation is: Cr + 3Cl2 → CrCl3.

6. Na + O2 → Na2O

To balance this equation, we need to ensure that the number of sodium (Na) atoms and oxygen (O) atoms is the same on both sides. There is one sodium atom on the left side and two on the right side, so we need to put a coefficient of 2 in front of Na2O to balance the sodium atoms. There is one oxygen atom on both sides, so the equation is already balanced in terms of oxygen atoms.

The balanced equation is: 2Na + O2 → 2Na2O.

7. Al + Cl2 → AlCl3

To balance this equation, we need to ensure that the number of aluminum (Al) atoms and chlorine (Cl) atoms is the same on both sides. There is one aluminum atom on the left side and one on the right side, so we don't need to do anything to balance the aluminum atoms. However, there are two chlorine atoms on the right side (Cl2), so we need to put a coefficient of 3 in front of AlCl3 to balance the chlorine atoms.

The balanced equation is: 2Al + 3Cl2 → 2AlCl3.

8. K + S → K2S

To balance this equation, we need to ensure that the number of potassium (K) atoms and sulfur (S) atoms is the same on both sides. There is one potassium atom on the left side and two on the right side, so we need to put a coefficient of 2 in front of K2S to balance the potassium atoms. There is one sulfur atom on both sides, so the equation is already balanced in terms of sulfur atoms.

The balanced equation is: 2K + S → K2S.

9. Ca + O2 → CaO

To balance this equation, we need to ensure that the number of calcium (Ca) atoms and oxygen (O) atoms is the same on both sides. There is one calcium atom on the left side and one on the right side, so we don't need to do anything to balance the calcium atoms. There are two oxygen atoms on the right side (O2), so we need to put a coefficient of 2 in front of CaO to balance the oxygen atoms.

The balanced equation is: 2Ca + O2 → 2CaO.

10. H2 + Cl2 → 2HCl

To balance this equation, we need to ensure that the number of hydrogen (H) atoms and chlorine (Cl) atoms is the same on both sides. There are two hydrogen atoms on the left side (H2), so we don't need to do anything to balance the hydrogen atoms. There are also two chlorine atoms on the right side (Cl2), so the equation is already balanced in terms of chlorine atoms.

The balanced equation is: H2 + Cl2 → 2HCl.

I hope this helps! Let me know if you have any further questions.