Could someone help me with these molecular formulas, i don't know what im doing wrong. For this example, i did it like this and it says its incorrect. Could you solve the the equations below your way and i match it to mines? Thank you so much

Fe (s) + Ni(NO3)2 (aq) =Fe(NO3)2 (aq) + Ni (s)

FeCl3(s) + K3PO4(aq)=
CaCl2(s) + K3PO4(aq)
FeCl3(s) + KNO3(aq)
Fe2(SO4)3 (aq) + K3PO4(aq)
CuBr2(s) + NH4OH(aq)
ZnBr2 (s) + NH4OH(aq)
CuBr2 (s) + NH4NO3(aq)
CuSO4 (s) + NH4OH(aq)
NiCl2 (s) + Na2CO3(aq)
MgCl2 (s) + Na2CO3(aq)
NiCl2 (s) + NaNO3(aq)
NiSO4 (s) + Na2CO3(aq

Your example probably wanted you to write Fe(NO3)3 and balance it.

Products for #2. FePO4 + KCl
#3 Ca3(PO4)2 + KCl
#4 No reaction.
#5. FePO4 + K2SO4
This exercise is to give you practice on predicting and balancing.
Rxns tend to take place if
a. the metal(alone) is ABOVE the ion(compound) in the activity series.
b. a ppt (insoluble) forms.
c. a gas forms
d. a weak electrolyte is formed.

thank you so much

To solve the given equations and determine the correct molecular formulas, we need to apply the rules of chemical reactions and write the balanced equations.

1. Fe (s) + Ni(NO3)2 (aq) = Fe(NO3)2 (aq) + Ni (s)

To balance this equation, we start by ensuring that the number of atoms of each element on both sides of the equation is equal.
There is already one iron (Fe) atom on each side. Now let's balance the other elements:

Fe (s) + Ni(NO3)2 (aq) = Fe(NO3)2 (aq) + Ni (s)

On the left: 2 nitrate (NO3) ions (2 x NO3)
On the right: 2 nitrate (NO3) ions (1 x NO3)

To balance the nitrate ions, we can multiply the nitrate (NO3) on the right side by 2:

Fe (s) + Ni(NO3)2 (aq) = Fe(NO3)2 (aq) + Ni (s)

Now all the elements are balanced, and the correct balanced equation is:

Fe (s) + Ni(NO3)2 (aq) = Fe(NO3)2 (aq) + Ni (s)

You can check this equation against your answer.

Now, let's move on to the rest of the equations and find their balanced molecular formulas.

2. FeCl3(s) + K3PO4(aq) = FePO4(s) + KCl(aq)

3. CaCl2(s) + K3PO4(aq) = Ca3(PO4)2(s) + 2KCl(aq)

4. FeCl3(s) + KNO3(aq) = Fe(NO3)3(s) + KCl(aq)

5. Fe2(SO4)3(aq) + 3K3PO4(aq) = 2FePO4(s) + 3K2SO4(aq)

6. CuBr2(s) + 2NH4OH(aq) = Cu(OH)2(s) + 2NH4Br

7. ZnBr2(s) + 2NH4OH(aq) = Zn(OH)2(s) + 2NH4Br

8. CuBr2(s) + 2NH4NO3(aq) = Cu(NO3)2(s) + 2NH4Br

9. CuSO4(s) + 2NH4OH(aq) = Cu(OH)2(s) + (NH4)2SO4(aq)

10. NiCl2(s) + Na2CO3(aq) = NiCO3(s) + 2NaCl(aq)

11. MgCl2(s) + Na2CO3(aq) = MgCO3(s) + 2NaCl(aq)

12. NiCl2(s) + 2NaNO3(aq) = Ni(NO3)2(s) + 2NaCl(aq)

13. NiSO4(s) + Na2CO3(aq) = NiCO3(s) + Na2SO4(aq)

You can match these balanced equations with your answers and see if they align.