Question

Закінчіть рівняння реакцій: Ca+O2= N+O2= NCI+Na= S+O2= K+O2=

Answer 1

2Са + О2 ->2СаО
N2+O2 -> 2NO
2HCl +2 Na -> 2NaCl + H2
S+O2 -> SO2
4K + O2 ->2 K2O

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. Ca + O2 = To balance the equation, we need to ensure that the number of calcium (Ca) atoms and oxygen (O) atoms is the same on both sides. Since there is only one calcium atom on the left side, we need to put a coefficient of 2 in front of Ca on the left side to balance the equation. This gives us:

2Ca + O2 =

Now, let's balance the oxygen atoms. There are two oxygen atoms on the right side, so we need to put a coefficient of 2 in front of O2 on the left side as well. The balanced equation is:

2Ca + 2O2 =

2. N + O2 = This equation represents the reaction between nitrogen (N) and oxygen (O). To balance it, we need to ensure that the number of nitrogen atoms and oxygen atoms is the same on both sides. Since there is only one nitrogen atom on the left side, we need to put a coefficient of 2 in front of N on the left side to balance the equation. This gives us:

2N + O2 =

Now, let's balance the oxygen atoms. There are two oxygen atoms on the right side, so we need to put a coefficient of 2 in front of O2 on the left side as well. The balanced equation is:

2N + 2O2 =

3. NCI + Na = This equation represents the reaction between sodium (Na) and nitrogen chloride (NCI). To balance it, we need to ensure that the number of sodium atoms, nitrogen atoms, and chlorine atoms is the same on both sides. Since there is only one sodium atom on the left side, we need to put a coefficient of 2 in front of Na on the left side to balance the equation. This gives us:

2NCI + 2Na =

Now, let's balance the nitrogen and chlorine atoms. There are two nitrogen atoms and two chlorine atoms on the left side, so the equation is already balanced.

4. S + O2 = This equation represents the reaction between sulfur (S) and oxygen (O). To balance it, we need to ensure that the number of sulfur atoms and oxygen atoms is the same on both sides. Since there is only one sulfur atom on the left side, we need to put a coefficient of 2 in front of S on the left side to balance the equation. This gives us:

2S + O2 =

Now, let's balance the oxygen atoms. There are two oxygen atoms on the right side, so we need to put a coefficient of 2 in front of O2 on the left side as well. The balanced equation is:

2S + 2O2 =

5. K + O2 = This equation represents the reaction between potassium (K) and oxygen (O). To balance it, we need to ensure that the number of potassium atoms and oxygen atoms is the same on both sides. Since there is only one potassium atom on the left side, we need to put a coefficient of 2 in front of K on the left side to balance the equation. This gives us:

2K + O2 =

Now, let's balance the oxygen atoms. There are two oxygen atoms on the right side, so we need to put a coefficient of 2 in front of O2 on the left side as well. The balanced equation is:

2K + 2O2 =

To summarize, the balanced equations are:

1. 2Ca + 2O2 = 2. 2N + 2O2 = 3. 2NCI + 2Na = 4. 2S + 2O2 = 5. 2K + 2O2 =

Please note that these balanced equations are based on the given reactants and products. If there are additional reactants or products, the equations may need further balancing.