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17 Cards in this Set
- Front
- Back
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What is the relationship between the volume of a gas sample and the number of moles in a gas sample? |
If the pressure and temperature are held constant then when the number of moles increases the volume increases |
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Avogadro's Law can be stated as: |
the volume of a gas is directly proportional to the number of moles (n) of a gas when T and P are constant |
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Dalton's Law of Partial Pressures |
Each gas exerts a pressure independent of the other gases and each gas will behave as if it alone occupied the total volume
The pressure depends on the total number of gas particles, not on the types of particles
the total pressure exerted by gases in a mixture is the sum of the partial pressures of those gases
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The partial pressure of a gas |
is the pressure that each gas in a mixture would exert if it were by itself in the container. |
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The air we breath contains (2) |
Mostly N2 and O2 (and small amounts of other gases) |
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Blood Gases |
In the body gases flow by diffusion: O2 flows into the tissues because the partial pressure of O2 is higher in blood and lower in tissues |
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Molar Volume conversion Factor |
At STP: 22.4 L = 1 mole |
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Gas Pressure Equation |
The force acting upon a specific area
Force / Area |
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Units of atm equivalency for: mmHG Torr lbs/in2 or Kilo Pascals |
1 atm = 760 mmHg 1 atm = 760 Torr 1 atm = 14.7 lbs/in2 1 atm = 101.325 |
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The downward pressure of the Hg in a barometer is ______ as the pressure of the atmosphere? |
The same as |
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Atmospheric Pressure |
The pressure exerted by a column of air from the top of the atmosphere to the surface of the earth. |
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A Barometer |
Measures the pressure exerted by the gases in the atmosphere and indicates the atmospheric pressure as the height in mm of the mercury column |
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A water barometer is 13.6 times taller than an Hg barometer because... |
H2O is less dense then mercury |
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pressure _____ when volume decreases |
decreases |
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when temperature increases, volume _____ |
decreases |
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Pressure ____ when volume changes from 12 L to 24 L |
decreases |
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volume ______ when temperature changes from 15 to 45 degrees celcius |
increases |
