Regents Chemistry Test Preparation Practice

    Forms Of Energy

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    Base your answers to questions 11 on the information below and on your knowledge of chemistry.

    Carbon dioxide, CO2, changes from the solid phase to the gas phase at 1 atm and 194.5 K. In the solid phase, CO2 is often called dry ice. When dry ice sublimes in air at 298 K, the water vapor in the air can condense, forming a fog of small water droplets. This fog is often used for special effects at concerts and in movie-making.

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