Chemistry Chapter 11 Answers – Flashcards

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question
Pressure is the force per unit
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surface area
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What is the SI unit of force?
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newton
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What does the constant bombardment of gas molecules against the inside walls of a container produce?
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pressure
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What instrument measures atmospheric pressure?
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barometer
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A pressure of 745 mm Hg equals
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745 torr.
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Convert the pressure 0.75 atm to mm Hg.
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570 mm Hg
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Convert the pressure 0.840 atm to mm Hg.
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638 mm Hg
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Convert the pressure 2.50 atm to kPa.
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253 kPa
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Standard temperature is exactly
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0°C
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Standard pressure is the pressure exerted by a column of mercury exactly
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760 mm Hg
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Standard pressure is exactly
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1 atm
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What is the 4 variables you must have values for, in working gas law problems?
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Pressure Temperature Volume Amount
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PSI
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Pressure
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Standard for this - 0 Celsius
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Temperature
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mL, cm3, cubic inches can be used to measure this
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Volume
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n
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Moles (amount)
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The expression V= kn is a statement of
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Avogadro's law
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The standard molar volume of a gas at STP is
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22.4 L
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The ideal gas law combines Boyle's law, Charles's law, Gay-Lussac's law and
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Avogadro's law
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All of the following equations are statements if the ideal gas law except: P = nRTV P/n = RT/V PV/T = nR R = PV/nT
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P = nRTV
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R equals
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R = 0.0821 L*atm / K* mole R = 62.4 L*torr. / K* mole
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