
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
In a closed container, the following reaction occurs: $\rm{2SO_{2}(g)+O_{2}(g) \rightleftharpoons 2SO_{3}(g)}$. The initial concentration of $\rm{SO_{2}}$ is $\rm{0.4 mol·L^{-1}}$, and the initial concentration of $\rm{O_{2}}$ is $\rm{1 mol·L^{-1}}$. When $\rm{80\%}$ of $\rm{SO_{2}}$ is converted to $\rm{SO_{3}}$, the reaction reaches equilibrium. Calculate the concentrations of the three gases at equilibrium.

Present the answer in LaTex format: \boxed{Your answer}
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