Zn + Ni(NO3)2-->
AlCl3 + Na2CO3-->
Al + O2 -->
NO2 -->
I can check your work.
Zn(NO3)2 + Ni
Al2(CO3)3 + 6NaCl
2 Al2O3
o2n
Zn + Ni(NO3)2--> Zn(NO3)2 + Ni
AlCl3 + Na2CO3--> Al2(CO3)3 + 6NaCl
Al + O2 --> 2 Al2O3
NO2 --> O2N
correct
To balance chemical equations, you need to make sure that the number of atoms of each element is the same on both sides of the equation. Here's how to balance the given equations step by step:
1. Zn + Ni(NO3)2 -> ?
In this equation, we have zinc (Zn) and nickel nitrate (Ni(NO3)2) reacting. Let's balance the equation:
On the left side, we have 1 Zn atom, and on the right side, we have 1 Ni atom. If we put a coefficient of 1 in front of Ni(NO3)2, we will also have 2 NO3 groups.
Zn + Ni(NO3)2 -> Ni + Zn(NO3)2
Now the equation is balanced.
2. AlCl3 + Na2CO3 -> ?
In this equation, we have aluminum chloride (AlCl3) and sodium carbonate (Na2CO3) reacting. Let's balance the equation:
On the left side, we have 1 Al atom and 3 Cl atoms. On the right side, we have 1 Na atom, 1 C atom, and 3 O atoms. To balance the chlorides, we need to put a coefficient of 3 in front of AlCl3. This will give us 3 Al atoms and 9 Cl atoms.
3 AlCl3 + Na2CO3 -> ?
Now we have 3 Al atoms on both sides, but we have 9 Cl atoms on the left and only 6 Cl atoms on the right. To balance the chlorides, we need to put a coefficient of 6 in front of NaCl. This will give us 6 Na atoms and 6 Cl atoms.
3 AlCl3 + 6 Na2CO3 -> ?
Now we have 6 sodium atoms, 6 carbon atoms, and 18 oxygen atoms on the right side. To balance the carbons and oxygens, we need to put a coefficient of 3 in front of Na2CO3.
3 AlCl3 + 3 Na2CO3 -> Al2(CO3)3 + 6 NaCl
Now the equation is balanced.
3. Al + O2 -> ?
In this equation, we have aluminum (Al) reacting with oxygen (O2). Let's balance the equation:
On the left side, we have 1 Al atom. On the right side, we have 2 O atoms in the O2 molecule. To balance the oxygens, we need to put a coefficient of 2 in front of Al.
2 Al + O2 -> ?
Now the equation is balanced.
4. NO2 -> ?
In this equation, we have nitrogen dioxide (NO2). There is no need to balance this equation because the number of atoms on each side is already the same.
NO2 -> NO2
The equation is already balanced.