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A mixture of gases contains CH4, Co2Heo, and CHS.
the total pressure 1s 1.50 atm and the numbers of
moles of the gases present are 0.31 mole for CHu,
0.25 mole for CH日c, and 0.29 mole for C3Hs, calcu-
]ate the partial presSures of the gases.
A 2.5-L fask at 15”C contains a miXture of three
gaseS, N2, He, and Ne, at partial preSSureS of 0.32 atm
for N2, 0.15 atm for He, and 0.42 atm for Ne. (a) Cal-
culate the total pressure of the miXxture. (b) Calculate
出e volume in liters at STP occupied by He and Ne 議
the N2 1s removed Selectlvely. NN
Dry air near sea level has the following composition
by volume: N2, 78.08 percent; O,, 20.94 percent; Ar,
0.93 percent; CO,, 0.05 percent. The atmospheric
pressure is 1.00 atm. Calculate (a) the partlal pres-
Sure of each gas in atm and (b) the COohcentratlion Of
each gas in moles per liter at 0。C. (7/7///- Because
Volume is proportional to the huber of moljes
Present, mole fractions of gases can be eXpresSed as
ITatios of volumes at the same temperature and
preSSure.)
A mixture of
ITmHg. If the partial pres-
mmHeg, what is the partial pres-
QT pressure of water at 285C 三
Sure of helium is 368
erature. (1) Whiceh container has the smallest mole
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