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The graphs above show the relationship between the pressure and volume of a 21.0 milligram sample of an unknown gas at 126
o
C.
How many moles of gas are in the sample?
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argon
chlorine
dichlorodifluoromethane
dichlorotetrafluoroethane
helium
krypton
methane
neon
nitrogen
oxygen
propane
sulfur dioxide
xenon
Which of these gases is the likely unknown?
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