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In the phase diagram of methanol, what phase transition occurs at 25.0 °C when methanol evaporates?
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13. Liquids, Solids & Intermolecular Forces
Phase Diagrams
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Which of the following elements is a gas at room temperature?
A
Mercury
B
Bromine
C
Oxygen
D
Iodine
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Identify the elements given in the problem: Mercury, Bromine, Oxygen, and Iodine.
Recall the states of matter for elements at room temperature (approximately 25°C or 77°F).
Understand that most elements are solids at room temperature, with a few exceptions being gases or liquids.
Recognize that Mercury is a liquid at room temperature, Bromine is also a liquid, and Iodine is a solid.
Recall that Oxygen is one of the few elements that is a gas at room temperature, along with other elements like Nitrogen and the noble gases.
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