Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter10: Gases And Their Properties
Section: Chapter Questions
Problem 105IL: You have a gas, one of the three known phosphorus-fluorine compounds (PF3, PF3, and P2F4). To find...
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Question 8.(a)
Transcribed Image Text:6. Suppose a balloon is launched whon the temperature is 22.5 °C and the barometric pressure
is 754.0 mm Hg. If the balloon's initial volume is 4.19 x 10' L, what will the volume be at
a height of 20 miles where the pressure is 76.0 mm Hg and the temperature is-33.0 °C?
7. (a) If 0.2 mol of helium occupies a volume of 64,0 L at a pressure of 0.15 atm, what is the
temperature of the gas?
(R 0.0821 L atm K'mol')
(b) A flashbulb of volume 2.6 cm³ contains O2(g) at a pressure of 2.3 atm and a temperature
of 26 °C. How many moles of O2(g) does the flashbulb contain?
(R = 0.0821 L atm K-'mol')
M=MRT
8. (a) A 50.0 g sample occupies 11.2 L at STP. Calculate the molecular weight of this gas.
(R = 0.0821 L atm K' mol-')
(b) At STP, a sample of oxygen gas occupies a volume of
Calculate the mass o
oxygen gas in the sample.
(R = 0.0821 L atm K-'mol, RAM: 0 = 16.0)
(c) An amount of 8.8 g of CO2 is filled inside a 100,0
container at a temperature C
27.0 °C. What will be the pressure (in Pascal) in the container?
(R = 8.314 J K' mol, Molar masas: CO2 = 44.0 g mol')
(d) Calculate the density of CO2 at 1200 Pa and 20°C.
(R = 0.0821 L atm K mol', Molar mass: CO2 = 44.0 g mol')
9.) (a) Calculate the
pressure
of
gas,
in atm, if 8.25 x 10 mol occupies a volume of 174.0 m
at -24.0 °C. (R= 0.0821 L atm K mol)
(b) A deep breath of air has a volume of 1.05 L at a pressure of 740 mm Hg and body
temperature of 37 °C. Calculate the number of molecules in the breath.
(R = 0.0821 L atm K- mol)
T Acm
oundaonS
die
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