Question

Уимические уравнения. Уравняйте уравнение. __Fe + __O2—> __Fe3 O4 __Ca + __N2 —> __Ca3N2__ Br2 + __KI —> __KBr + __I2__Si + __HF —> __SiF4 + __H2я вас прошу, ПОЖАЛУЙСТА ПОМОГИТЕ, очень срочно... даю 50 баллов. ​

Answer 1

Відповідь:

3Fe + 2O2—> Fe3 O4

3Ca + N2 —> Ca3N2

Br2 + 2KI —> 2KBr + I2

Si + 4HF —> SiF4 + 2H2

Пояснення:

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 balance each equation step by step:

1. Fe + O2 → Fe3O4

To balance this equation, we need to ensure that the number of Fe atoms and O atoms is the same on both sides.

On the left side, we have 1 Fe atom and 2 O atoms. On the right side, we have 3 Fe atoms and 4 O atoms. To balance the Fe atoms, we can put a coefficient of 3 in front of Fe on the left side. This gives us:

3Fe + O2 → Fe3O4

Now, the number of Fe atoms is balanced. To balance the O atoms, we can put a coefficient of 2 in front of O2 on the left side. This gives us the final balanced equation:

3Fe + 2O2 → Fe3O4

2. Ca + N2 → Ca3N2

To balance this equation, we need to ensure that the number of Ca atoms and N atoms is the same on both sides.

On the left side, we have 1 Ca atom and 2 N atoms. On the right side, we have 3 Ca atoms and 2 N atoms. To balance the Ca atoms, we can put a coefficient of 3 in front of Ca on the left side. This gives us:

3Ca + N2 → Ca3N2

Now, the number of Ca atoms is balanced. The N atoms are already balanced. Therefore, the equation is already balanced.

3. Br2 + KI → KBr + I2

To balance this equation, we need to ensure that the number of Br atoms and I atoms is the same on both sides.

On the left side, we have 2 Br atoms and 1 I atom. On the right side, we have 2 K atoms, 1 Br atom, and 1 I atom. To balance the Br atoms, we can put a coefficient of 2 in front of KBr on the right side. This gives us:

Br2 + KI → 2KBr + I2

Now, the number of Br atoms is balanced. The I atoms are already balanced. Therefore, the equation is already balanced.

4. Si + HF → SiF4 + H2

To balance this equation, we need to ensure that the number of Si atoms, F atoms, and H atoms is the same on both sides.

On the left side, we have 1 Si atom, 1 F atom, and 1 H atom. On the right side, we have 1 Si atom, 4 F atoms, and 2 H atoms. To balance the F atoms, we can put a coefficient of 4 in front of HF on the left side. This gives us:

Si + 4HF → SiF4 + H2

Now, the number of F atoms is balanced. To balance the H atoms, we can put a coefficient of 2 in front of H2 on the right side. This gives us the final balanced equation:

Si + 4HF → SiF4 + 2H2

Please note that the coefficients in front of the chemical formulas represent the number of molecules or formula units, not individual atoms.

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