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Practice-Problems-chapter-5-and-6.docx - Practice Problems...

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Practice Problems: N = 6.02 x 10 23 R = 0.08206 L atm/mol K 1atm = 760 mmHg = 760 torr T(K) = T( o C) + 273.15 o C 1L atm = 101.325 J T( o F) = 9/5( o C) + 32 o F 1. What volume (in mL) will a sample of F 2 gas occupy in a syringe at 5.5 atm, if the F 2 has a volume of 25.0 mL at 1.2 atm? 2. To what volume will a sample of gas expand if it is heated from 50.0°Cand 2.33 L to 500.0°C? 3. A syringe initially holds a sample of gas with a volume of 285 mL at 355 K and 1.88 atm. To what temperature must the gas in the syringe be heated/cooled in order to have a volume of 435 mL at 2.50 atm? 4. What pressure will 14.0 g of CO exert in a 3.5 L container at 75°C? 1
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5. Using the graph below, which of the gases in the graph below has the largest molar mass? A) A B) B C) C D) D E) There is not enough information to determine. 6. The density of a gas is 1.43 g/mole at STP. What is the gas? A) Cl2 B) S C) O2 D) Ne 7. A mixture of He, Ne and Ar has a pressure of 7.85 atm. If the Ne has a mole fraction of 0.47 and Ar has a mole fraction of 0.23, what is the pressure of He?
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