gallium, ga, reacts with chlorine gas to produce gallium(iii) chloride. when the equation for the reaction is balanced with lowest whole - number coefficients, the coefficient for gallium is
a 1
b 2
c 3
d 4

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Accepted Answer

# Explanation:
## Step1: Write the unbalanced equation
Gallium ($Ga$) reacts with chlorine gas ($Cl_2$) to produce gallium(III) chloride ($GaCl_3$). The unbalanced equation is $Ga + Cl_2
ightarrow GaCl_3$.
## Step2: Balance the chlorine atoms
There are $2$ chlorine atoms on the left - hand side ($Cl_2$) and $3$ chlorine atoms on the right - hand side ($GaCl_3$). The least common multiple of $2$ and $3$ is $6$. So, we give $Cl_2$ a coefficient of $3$ ($3Cl_2$ gives $6$ $Cl$ atoms) and $GaCl_3$ a coefficient of $2$ ($2GaCl_3$ also gives $6$ $Cl$ atoms). The equation becomes $Ga+3Cl_2
ightarrow 2GaCl_3$.
## Step3: Balance the gallium atoms
Now, for the gallium ($Ga$) atoms, since there are $2$ $Ga$ atoms on the right - hand side ($2GaCl_3$), we give $Ga$ a coefficient of $2$. The balanced equation is $2Ga + 3Cl_2=2GaCl_3$.

# Answer:
B. 2

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QUESTION IMAGE

Question

Explanation:

Step1: Write the unbalanced equation

Step2: Balance the chlorine atoms

Step3: Balance the gallium atoms

Answer: