011409_lecture_slides

011409_lecture_slides - 2> grams N 2 • P V = n R T •...

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Wednesday, January 14 th • he ideal gas law The ideal gas law •Density of gases •Partial pressures •Stoichiometry in gas reactions (part 1)
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s we saw on Monday a pop bottle can only handle so much As we saw on Monday, a pop bottle can only handle so much pressure. If the bottle exploded when the nitrogen reached a pressure of 10 atm and a temperature of 25C, what mass of liquid nitrogen would we need to add to a 0.50 L bottle to ensure the same result? • Use ideal gas law to find mols N
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Unformatted text preview: 2-> grams N 2 • P V = n R T • n = (PV)/(RT) • n=(10 atm * 0.5 L) / (0.08206 L atm/mol K * 298 K) • n=0.204 mol • 0.204 mol N * (28.02 g/mol) = 5.7 g N 2 hat is the identity of a gas with What is the identity of a gas with a density of 1.428 g/L at STP? • Density -> Molar Mass -> Identity of gas • M=DRT/P • M=(1.428 g/L * 0.08206 L atm/mol K * 273 K) / (1 atm) • M=31.99 g/mol 2 /m l x n • 32 g/mol=oxygen...
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011409_lecture_slides - 2> grams N 2 • P V = n R T •...

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