the equation for water is h₂ +o₂ → h₂o. to balance the equation, which coefficient should be placed in front…

the equation for water is h₂ +o₂ → h₂o. to balance the equation, which coefficient should be placed in front of h₂ and h₂o?\n1\n2\n3\n4

the equation for water is h₂ +o₂ → h₂o. to balance the equation, which coefficient should be placed in front of h₂ and h₂o?\n1\n2\n3\n4

Answer

Explanation:

Step1: Count oxygen atoms

On the left - hand side, there are 2 oxygen atoms in $O_2$. On the right - hand side, there is 1 oxygen atom in $H_2O$. To balance oxygen, we need 2 moles of $H_2O$.

Step2: Count hydrogen atoms

Since we have 2 moles of $H_2O$, there are 4 hydrogen atoms on the right - hand side. So we need 2 moles of $H_2$ on the left - hand side to balance hydrogen. The balanced equation is $2H_2 + O_2\rightarrow2H_2O$.

Answer:

B. 2