select the correct answer. which coefficient of o₂ is needed to balance the equation c₃h₈ + o₂ → 3co₂ +…

select the correct answer. which coefficient of o₂ is needed to balance the equation c₃h₈ + o₂ → 3co₂ + 4h₂o? a. 2 b. 3 c. 5 d. 6

select the correct answer. which coefficient of o₂ is needed to balance the equation c₃h₈ + o₂ → 3co₂ + 4h₂o? a. 2 b. 3 c. 5 d. 6

Answer

Answer:

C. 5

Explanation:

Step1: Count oxygen atoms on right - hand side

On the right - hand side of the equation $3CO_2 + 4H_2O$, the number of oxygen atoms in $3CO_2$ is $3\times2 = 6$ and in $4H_2O$ is 4. So the total number of oxygen atoms on the right - hand side is $6 + 4=10$.

Step2: Determine coefficient of $O_2$

Let the coefficient of $O_2$ be $x$. Since each $O_2$ molecule has 2 oxygen atoms, and we need 10 oxygen atoms in total on the left - hand side to balance the equation, we have $2x = 10$. Solving for $x$, we get $x = 5$.