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16 Cards in this Set
- Front
- Back
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What special properties do gases have that liquids and solids do not?
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Gas molecules are free to move around and will take up the size and shape of its container.
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In order to have an idea of the amount of matter in a gas sample, what do u need to know?
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the temperature and pressure of the gas
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What type of units is forced measured in (chemistry)?
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Kilopascals (kPa)
millimeters of mercury (mm of Hg) atmospheres (atm) |
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What is standard atmospheric pressure in each of the 3 units of pressure?
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101.3 kPa; 760 mm of Hg; or 1.0 atm
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What temperature scale is used in doing math problems involving gases?
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Kelvin
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Why must we use the Kelvin scale?
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the celcius scale can result in negative numbers
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What is the formula for converting Celsius temperatures to Kelvin?
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K= C+273
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What is standard temperature?
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273 K or 0 celcius
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What does STP stand for?
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standard temperature and pressure
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Summarize Boyle's Law
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The volume of a sample of gas is inversly proportional to its pressure, if the temperature remains constant.
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What does this mean?
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As the pressure increases the volume of a gas decreases. As the pressure decreases, the volume of a gas increases.
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What is the formula for Boyle's Law?
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P1V1=P2V2
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Summarize Charles' law
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the volume of a quantity of gas, held at constant pressure, varies directly with the kelvin temperature
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What does this mean (Charles)
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as the temperature increases, the volume increases. AS the temp decreases the volume decreases
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What is the formula for Charles's law?
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V1/T1=V2/T2
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What is the formula for the Combined Gas law?
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V2=V1P1T2/P2T1
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