Question

Расставьте коэффициенты: S+O2=SO2 Ca+O2=CaO P+O2=P2O5 Fe+Cl2=FCl3 Na+H2=NaH Срочно, помогите пожалуйста!!!!!!

Answer 1

S+O2=SO2
2Ca+O2=2CaO
4P+5O2=2P2O5
2Fe+3Cl2=2FeCl3
2Na+H2=2NaH

Answer 2

Balancing Chemical Equations

Balancing chemical equations involves adjusting the coefficients in front of the chemical formulas to ensure that the number of atoms of each element is the same on both sides of the equation. Let's balance the given chemical equations step by step:

1. S + O2 = SO2 To balance this equation, we need to ensure that the number of sulfur (S) and oxygen (O) atoms is the same on both sides. We can start by balancing the sulfur atoms first. Since there is only one sulfur atom on the left side, we need to put a coefficient of 1 in front of SO2 on the right side. This gives us:

S + O2 = 1SO2

Next, let's balance the oxygen atoms. There are two oxygen atoms on the left side (O2) and two oxygen atoms on the right side (SO2). The equation is now balanced:

S + O2 = 1SO2

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

Ca + O2 = 2CaO

3. P + O2 = P2O5 To balance this equation, we need to ensure that the number of phosphorus (P) and oxygen (O) atoms is the same on both sides. There is one phosphorus atom on both sides, so we don't need to adjust the coefficient for P. However, there are two oxygen atoms on the left side (O2) and five oxygen atoms on the right side (P2O5). To balance the equation, we need to put a coefficient of 5/2 (or 2.5) in front of O2:

P + 2.5O2 = P2O5

Since we can't have a fractional coefficient, we can multiply the entire equation by 2 to get rid of the decimal:

2P + 5O2 = 2P2O5

4. Fe + Cl2 = FCl3 To balance this equation, we need to ensure that the number of iron (Fe) and chlorine (Cl) atoms is the same on both sides. There is one iron atom on both sides, so we don't need to adjust the coefficient for Fe. However, there are two chlorine atoms on the left side (Cl2) and three chlorine atoms on the right side (FCl3). To balance the equation, we need to put a coefficient of 3/2 (or 1.5) in front of Cl2:

Fe + 1.5Cl2 = FCl3

Since we can't have a fractional coefficient, we can multiply the entire equation by 2 to get rid of the decimal:

2Fe + 3Cl2 = 2FCl3

5. Na + H2 = NaH To balance this equation, we need to ensure that the number of sodium (Na) and hydrogen (H) atoms is the same on both sides. There is one sodium atom on both sides, so we don't need to adjust the coefficient for Na. However, there are two hydrogen atoms on the left side (H2) and only one hydrogen atom on the right side (NaH). To balance the equation, we need to put a coefficient of 2 in front of NaH:

Na + H2 = 2NaH

The equation is now balanced.

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