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Physical Science

1. boyle's law states that the volume of a gas is inversely proportional to its pressure if the?

A) temperature and number of particles are consistent**
B) temperature reaches absolute zero
C) number of particles are doubled
D) temperature and number of particles are doubled

2. which phase change is the reverse of condensation?
A) freezing
B) sublimation**
C) vaporization
D) melting

If number 2 is wrong I choose C.

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  1. #1 correct

    #2C
    dew condenses on the grass at night
    it evaporates (vaporizes) in the sun during the say.

    CO2 sublimes: goes from solid to vapor without a liquid phase. Hence, dry ice.

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    Steve

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