Question

multiple choice 1point decide if each reaction is balanced or not balanced. (you need to count the atoms of each element on the reactant and product side, use paper if needed.) 2c₂h₆ + 7o₂ → 4co₂ + 6h₂o not balanced balanced

Explanation:

Step1: Count carbon atoms

On reactant side: $2\times2 = 4$ carbon atoms in $2C_2H_6$. On product side: $4$ carbon atoms in $4CO_2$.

Step2: Count hydrogen atoms

On reactant side: $2\times6=12$ hydrogen atoms in $2C_2H_6$. On product side: $6\times2 = 12$ hydrogen atoms in $6H_2O$.

Step3: Count oxygen atoms

On reactant side: $7\times2 = 14$ oxygen atoms in $7O_2$. On product side: $(4\times2)+(6\times1)=8 + 6=14$ oxygen atoms in $4CO_2$ and $6H_2O$.

Answer:

Balanced