Question

determine whether the following equation is balanced- 2 nabr + caf₂ → 2 naf + cabr₂
the equation is not balanced because there are six atoms of sodium in the products and reactants.
the equation is not balanced because there are more calcium atoms in the products than the reactants.
the equation is not balanced because there are more bromine atoms in the reactants than the products.
the equation is balanced.

Explanation:

Step1: Count sodium (Na) atoms

On the reactant side, in $2NaBr$, the number of Na atoms is 2. On the product side, in $2NaF$, the number of Na atoms is 2.

Step2: Count bromine (Br) atoms

On the reactant side, in $2NaBr$, the number of Br atoms is 2. On the product side, in $CaBr_2$, the number of Br atoms is 2.

Step3: Count calcium (Ca) atoms

On the reactant side, in $CaF_2$, the number of Ca atoms is 1. On the product side, in $CaBr_2$, the number of Ca atoms is 1.

Step4: Count fluorine (F) atoms

On the reactant side, in $CaF_2$, the number of F atoms is 2. On the product side, in $2NaF$, the number of F atoms is 2.

Answer:

The equation is balanced.