examine the chemical reaction.\n$c_{3}h_{8}+o_{2}\to4h_{2}o + 3co_{2}$\nwhat coefficient of $o_{2}$ should…
examine the chemical reaction.\n$c_{3}h_{8}+o_{2}\to4h_{2}o + 3co_{2}$\nwhat coefficient of $o_{2}$ should be added so the number of atoms of oxygen is conserved on both sides of the reaction equation?\no 3\no 5\no 7\no 10
Answer
Explanation:
Step1: Count oxygen atoms on right - hand side
In $4H_2O$, oxygen atoms are 4. In $3CO_2$, oxygen atoms are $3\times2 = 6$. Total oxygen atoms on right - hand side is $4 + 6=10$.
Step2: Determine coefficient of $O_2$
Let the coefficient of $O_2$ be $x$. Each $O_2$ molecule has 2 oxygen atoms. So $2x = 10$, then $x = 5$.
Answer:
5