A 50-gram sample of dry ice (solid CO2) is placed in a 4-liter container. The system is sealed and allowed to reach room temperature (20°C). By approximately how much does the pressure inside the container increase when the dry ice turns to gas? (Ignore the initial volume of the sample.)
What will be an ideal response?
the pressure increases by about 7 atm
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How much of the Earth's surface is experiencing night at any time?
a. less than one-half, because of the tilt of the equator to the ecliptic plane b. more than one-half, because of the precession of the poles c. exactly one-half d. all of the night sky
All the following statements are true. Which one explains why convection can occur in the troposphere but not in the stratosphere?
A) Atmospheric pressure is much greater in the troposphere than in the stratosphere. B) The stratosphere contains significant amounts of ozone but the troposphere does not. C) Temperature declines with altitude in the troposphere but increases with altitude in the stratosphere. D) Clouds tend to form in the troposphere but not the stratosphere.
Why does the Milky Way appear as a band of light in the sky?
What will be an ideal response?
When would radiation predominate in boiling?
What will be an ideal response?