Question

Помогите решить химические уравнения1) Na+H2=NaH2) HNO2+HNO3=оксид азота (2)+H2O3)Mg2Si+HCI=гидрид кремния+MgCl2срочно заранее спасибо

Answer 1

1) 2Na+H2= 2NaH
2) HNO2 + HNO3= 2NO2 + H2O
3 )Mg2Si + 4HCI= SiH4 + 2MgCl2

Answer 2

Chemical Equations:

1) The chemical equation you provided is: Na + H2 = NaH

2) The chemical equation you provided is: HNO2 + HNO3 = nitrogen oxide + H2O

3) The chemical equation you provided is: Mg2Si + HCl = silicon hydride + MgCl2

Let's go through each equation and balance them:

1) Na + H2 = NaH

To balance this equation, we need to ensure that the number of atoms on both sides of the equation is equal. In this case, we have one sodium atom (Na) on the left side and one on the right side, so the sodium atoms are already balanced. However, we have two hydrogen atoms (H2) on the left side and only one on the right side. To balance the hydrogen atoms, we can multiply the NaH on the right side by 2:

2Na + H2 = 2NaH [[1]]

2) HNO2 + HNO3 = nitrogen oxide + H2O

To balance this equation, we need to ensure that the number of atoms on both sides of the equation is equal. Let's start by balancing the nitrogen atoms (N). We have one nitrogen atom on the left side and two nitrogen atoms on the right side. To balance the nitrogen atoms, we can multiply HNO2 on the left side by 2:

2HNO2 + HNO3 = nitrogen oxide + H2O [[2]]

Next, let's balance the hydrogen atoms (H). We have two hydrogen atoms on the left side and two hydrogen atoms on the right side, so the hydrogen atoms are already balanced.

Finally, let's balance the oxygen atoms (O). We have two oxygen atoms on the left side and four oxygen atoms on the right side. To balance the oxygen atoms, we can multiply HNO3 on the right side by 2:

2HNO2 + 2HNO3 = nitrogen oxide + H2O [[3]]

3) Mg2Si + HCl = silicon hydride + MgCl2

To balance this equation, we need to ensure that the number of atoms on both sides of the equation is equal. We have two magnesium atoms (Mg2) on the left side and one magnesium atom (Mg) on the right side. To balance the magnesium atoms, we can multiply MgCl2 on the right side by 2:

Mg2Si + HCl = silicon hydride + 2MgCl2 [[4]]

Next, let's balance the silicon atoms (Si). We have one silicon atom on the left side and one silicon atom on the right side, so the silicon atoms are already balanced.

Finally, let's balance the hydrogen atoms (H) and chlorine atoms (Cl). We have one hydrogen atom (H) and one chlorine atom (Cl) on both sides of the equation, so the hydrogen and chlorine atoms are already balanced.

Therefore, the balanced equation is:

Mg2Si + HCl = silicon hydride + 2MgCl2 [[4]]

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