Chemistry 1010 Atmosphere and Balloons. Boyles Law P 1 V 1 = P 2 V 2.
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Transcript of Chemistry 1010 Atmosphere and Balloons. Boyles Law P 1 V 1 = P 2 V 2.
Combined Gas Law
P1V1 P2V2
T1 T2
=
For Success, make surethat all units are the sameand that temperatures arein Kelvins
Book Problem
A gas occupies 3.8 L at 0.70 atm pressure. If we expand the volume at constant temperature to 6.5L, what is the final pressure?
A gas is expanded from an initial volume of 20.5 L at 0.92 atm at room temperature (298 K) to a final volume of 340.6 L. During the expansion the gas cools to 12.0 °C. What is the new pressure?
How Do Hot Air Balloons Work
The air inside the balloon is heatedThe air molecules move faster They hit into each other with more forceThis force forces some molecules out of the balloonThis means there is less air inside the balloonBecause there is less air, the inside is less denseBecause it is less dense, the balloon will rise
Atmospheric Chemistry
• Ozone Holes
• Global Warming
Images from Yahoo images
CO2
25 billion tons produced on earth each yearEarth can absorb 15 billion tons10 billion ton excess each year