This passage is part of a report of a science
experiment.
The solution contains water and the unknown second
substance. The solution was heated gradually, and it
began boiling at 80°C. The gas rose through a glass
tube that led to a cold flask. A clear, colorless liquid
formed in the flask.
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What was the purpose of boiling the solution?
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correctly complete the explanation.
The purpose of boiling the solution was to
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Because the boiling point of water is
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formed in the flask must have been
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2
80°C, the clear, colorless liquid that
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to
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By the way I put the drop-down menu options in the comments