Which pressure is different from the others

Unit H Review—The Behavior of GasesGas LawBoyle’sCharles’CombinedEquationP1V1 = P2V2V1 = V2T1 T2P1V1 = P2V2T1T2Gas Law(at constant T and n)Avogadro’s(at constant P and n)Ideal(at constant n)Dalton’sEquationV1 = V2n1n2PV = nRT(at constant P and T)(R = 8.314 kPaL mol-1 · K-1)Ptotal = P1 + P2 + P3 + …Review Questions:Multiple-Choice:1. Which pressure is different from the others?A.790 mmHgB.105 kPaC.1.04 atmD.Choices A, B, and C are all the same pressure.2. As the temperature of a gas increases, the kinetic energy of its particlesA.increases.B.decreases.C.remains the same.3. If the volume of a balloon expands, and the temperature remains constant, the pressure on the balloonA.increases.B.decreases.C.remains the same.4. If the temperature of the air inside an automobile tire increases, but the tire does not expand, the pressureof the air inside the tireA.increases.B.decreases.C.remains the same.5. A partially inflated weather balloon is released. If the air temperature is constant, but the air pressurearound the balloon drops as the balloon rises, the volume of the weather balloonA.increases.B.decreases.C.remains the same.6. A chemist has a certain volume of gas in a balloon. If the volume of gas decreases overnight, but thepressure remains constant, the temperature of the gasA.increases.B.decreases.C.remains the same.7. All gases deviate from ideal gas behavior, particularly at high pressures and lowtemperatures.A.TrueB.False8. Temperatures below absolute zero are not possible.A.TrueB.FalseP9. For an ideal gas V is a constant.A.TrueB.False10. In a mixture of gases, each gas behaves independently of the other gases in the mixture.A.TrueB.False11. Which temperature scale provides a direct measure of the average kinetic energy of a substance?A.CelsiusB.KelvinC.FahrenheitD.Reamur12. What is the name of a device used to measure gas pressure?A.ThermometerB.VaporometerC.CalorimeterD.Barometer13. Which law describes the relationship between the volume and temperature of a gas?A.Boyle’s LawB.Dalton’s LawC.Charles’ LawD.Gay-Lussac’s Law14. According to Avogadro’s Principle, equal ____ of gas at the same temperature and pressure contain equalnumbers of particles.A.massesB.volumesC.samplesD.areas15. The individual molecules of gas at STPA.never collide.B.all have the same speed.C.D.travel at different speeds.have a constant speed.16. If kinetic energy is added to a sample of gas in a rigid container, which of the following takes place?A.The temperature increases.B.The pressure increases.C.The molecules of gas move faster.D.All the above occur.17. If two different gases have the same kinetic energy,A.the gas with more mass has a greater velocity.B.the gas with more mass has a lower velocity.C.the gases have the same velocity, regardless of mass.D.the gas with more mass has a higher temperature.18. Gases deviate from ideal behavior because gas particlesA.are in continuous motion.B.move randomly in straight lines.C.have different amounts of kinetic energy.D.have some attraction for each other.19. When a closed tank of air is heated, the density of the air (neglecting any expansion of the tank)A.increases.B.decreases.C.remains the same.20. Which of the following is NOT one of the postulates of the Kinetic-Molecular Theory of gases?A.Gas molecules are in a state of constant, random motion.B.The diameter of a gas molecule is large when compared with the distance between gasmolecules.C.There is no force of attraction between gas molecules.D.The temperature of a gas is a reflection of the average kinetic energy of the gas.E.Choices A, B, C, and D are all postulates of the Kinetic-Molecular Theory.Problems:21. 59.7 cm3 of helium gas at 95.0 kPa is expanded to 100.0 cm3 at constant temperature. What is the newpressure on the gas?22. Oxygen gas is collected over water at a temperature of 25.0°C and a pressure of 746.8 mmHg. What is thepressure due to dry oxygen gas?23. What pressure will be exerted by 7.99 g of butane, C4H10, if the gas is in a container measuring 1.50 L andis at 27°C?24. 5.18 L of nitrogen gas at 76.0°C are cooled to 6.0°C at constant pressure. Calculate the new volume of thegas.25. What is the molar mass of a gas if 372.0 mL has a mass of 0.800 g at 99.8°C and 106.6 kPa?26. What volume of CO2(g) is produced when 1.05 kg of ethane, C2H6(g), is burned? The temperature is24.0°C and the pressure is 745.0 mmHg.2 C2H6(g) + 7 O2(g) → 4 CO2(g) + 6 H2O(g)