Question

checking comprehension
balance the following equations:

1. ( p + o _ { 2 }

ightarrow p _ { 2 } o _ { 5 } )

1. ( agf + cacl _ { 2 }

ightarrow agcl + caf _ { 2 } )

1. ( na + o _ { 2 }

ightarrow na _ { 2 } o )

1. ( h _ { 3 } po _ { 4 } + koh

ightarrow k _ { 3 } po _ { 4 } + h _ { 2 } o )

1. ( al _ { 2 } o _ { 3 }

ightarrow al + o _ { 2 } )

1. ( fe + cl _ { 2 }

ightarrow fecl _ { 2 } )
multiple-choice question
when the equation: ( fe + cl _ { 2 }
ightarrow fecl _ { 2 } ) is balanced the coefficient in front of the fe is

Explanation:

Step1: Balance the equation

$$\text{Fe}+\text{Cl}_2 ightarrow\text{FeCl}_2$$

On the left - hand side, we have 1 Fe atom and 2 Cl atoms. On the right - hand side, we have 1 Fe atom and 2 Cl atoms.

Answer:

1