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.
What was the purpose of boiling the solution?
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to correctly complete the explanation.
The solution was boiled to Choose.. the
solution. Because water Choose.. boil at
80°C, the clear, colorless liquid that formed in
the flask must have been
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