Fe2O3 because O has a -2 charge and Fe and +3, you want the charges to equal each other so if you have 2 Fe with +3 charge the charge becomes 6 if you have 3 O with -2 charge the charge becomes 6.
CaCl₂ + 2 AgNO₃ = Ca(NO₃)₂ + 2AgCl
Calcium Chloride + Silver Nitrate = Calcium Nitrate + Silver Chloride
<span>( double replacement )</span>
hope this helps!
Sorry If it’s wrong but it should be c d
Answer:
Yes, it is balanced because the number of atoms of each element was same for both reactant side and product side.
Explanation:
Atoms of elements combine with one another to form compounds in a process called chemical reactions. In this case, atoms of Aluminum (Al) combines with atoms of Oxygen (O) to form Aluminum oxide (Al2O3).
However, for a chemical reaction to obey the law of conservation of mass, it needs to be BALANCED. Being balanced, for a chemical reaction, means the number of atoms of each element on the reactant side must equal the ones on the product side. To do this, coefficients are used at the back of each elements.
The original equation looks like:
AI + O2 → AI2O3
To make this balanced, coefficients 4 and 3 were used at the back of Al and O2 respectively while coefficient 2 was used behind Al2O3 as follows:
4AI+3O2 → 2AI2O3
Hence, the equation provided in this question is already balanced because the number of atoms of each element was same for both reactant side and product side.