
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]


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30 cm³ of hydrogen (under normal conditions) was mixed with 0.03 g of pure oxygen and exploded in an eudiometer. After cooling the apparatus to 0°C, the volume of the remaining gas was measured. What is its volume and what type of gas is it?

a) 3 ml, O₂

b) 3 ml, H₂

c) 1 ml, O₂

d) 1 ml, H₂

e) 6 ml, O₂

f) 6 ml, H₂

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