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Jan '20
MCAT Question of the Day | MCAT Course

  • Q:

    If one follows a line separating phases in a phase diagram and examines a substance at that particular pressure/temperature, which of the following can be guaranteed?



    At any given point, there will be 50% of one phase and 50% of another phase of the substance.


    If the line separates solid and liquid and has a negative slope, the solid is more dense than the liquid.


    All three phases exist to some degree along every point of the line.


    Along the curve which separates the gas phase from other phases, decreasing pressure will result in a predominance of gas molecules in the substance.

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