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The weakest link

The weakest link. L. Round 1. 14 questions 10 second delay. What are the postulates of the Kinetic molecular theory?. Gases are made of small particles Take up little volume compared with the volume of the container Move in straight lines Have no attractive or repulsive forces (mostly)

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The weakest link

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  1. The weakest link L

  2. Round 1 14 questions 10 second delay

  3. What are the postulates of the Kinetic molecular theory? • Gases are made of small particles • Take up little volume compared with the volume of the container • Move in straight lines • Have no attractive or repulsive forces (mostly) • Elastic collisions • Average kinetic energy = temp.

  4. The random movement of particles from an area of high concentration to an area of low concentration is: • Diffusion

  5. Is effusion is directly or inversely proportional to the square root of molar mass? • Inversely

  6. Is Pressure directly or inversely proportional to volume according to Boyles law? • Inversely

  7. Is temperature directly or inversely proportional to volume according to charles law? • Directly

  8. Is temperature directly or inversely proportional to pressure according to gay lussacs law? • Directly

  9. Molecules with a small atomic mass typically form which state of matter? • Gas

  10. When a gas is heated what property will increase?(Pressure, volume, both neither?) • Both

  11. When a bond forms is it endothermic or exothermic • Exothermic

  12. End of round Who is the weakest link

  13. Round 2 12 questions 30 second delay

  14. Calculate: if a balloon has an original volume of 1.5L at STP, what is the new pressure inside the balloon when it is compressed to 1.0L? • 1,140mmHg

  15. Calculate: if the initial volume of a balloon is 1.5L at standard pressure and room temp (25°C). What will the new volume of the balloon be when the temp drops to 3°C? • 1,140mmHg

  16. Calculate: 500mL sample of O2 gas at 760mmHg is compressed to 100mL what will the new pressure be? • 3800mm Hg

  17. Calculate: a sample of gas occupies 45.2mL at 720mm Hg. What is its volume at standard atmospheric pressure? • 43mL

  18. Calculate: A sample of oxygen is collected over water at a total pressure of 755 torr at 20°C. Calculate the pressure of oxygen, if water vapor has a partial pressure of 17.5 torr at 20°C. • 737.5 torr

  19. Calculate: What is the partial pressure of hydrogen gas in a mixture of hydrogen and helium if the total pressure is 600 mm Hg and the partial pressure of helium is 439 mm Hg? • 161 mm Hg

  20. Calculate: Find the total pressure for a mixture that contains four gases with partial pressures of 5.00 KPa, 4.46 KPa, 3.02 KPa, and 1.20 KPa. • 13.78 KPa

  21. Calculate: you have 5.00 L of helium in a balloon at 1.00 atm, if you decrease the volume to 2.00 L, what would your balloons pressure be? • 2.5atm

  22. Calculate: The pressure of a sample of helium is a 1.00L container is 0.988atm, what is the new pressure if the sample is placed in a 2.00L container? • 0.494 atm

  23. Calculate: A sample of neon gas occupies 0.220L at 0.860atm, what ill be it’s volume oat 29.2kPa pressure? • 0.657L

  24. Calculate: What is the volume of air in a balloon that occupies 0.620L at 25°C if the temperature is lowered to 0.00°C? • 0.57L

  25. Calculate: A gas at 89°C occupies a volume of 0.67L. At what Celsius temperature will the volume increase to 1.12L? • 330°C

  26. End of round Who is the weakest link

  27. Round 3 10 questions 30 second delay

  28. What is the combined gas law? P1V1 = P2V2 T1 T2

  29. Which three (3) laws are demonstrated by the combined gas law? • Boyles • Charles • Gay-lussacs

  30. Calculate: A helium filled balloon at sea level has a volume of 2.1L at 0.998atm and 36°C. If it is raises to an elevation at which the pressure is 0.900atm and the temperature is 28°C, what will the new volume of the balloon be? • 2.3L

  31. Calculate: At 0.00°C and 1.00atm, a sample of gas occupies 30.0mL. If the temperature is increased to 30.0°C and the entire sample is transferred to a 20.0mL container, what will the gas pressure be inside the container? • 1.66atm

  32. What is the ideal gas equation? • PV=nRT

  33. What does the n in the ideal gas equation stand for? • PV=nRT

  34. What the equation used to calculate Molar mass if you are given density of a gas? • M = DRT/P

  35. What is the units of the ideal gas constant? • mmHg L/mol K

  36. calculate the number of moles of a gas contained in a 3.0L vessel at 300K with a pressure of 1.5atm 0.18mol = n

  37. At what temperature would 2.10 moles of N2 gas have a pressure of 1.25 atm and in a 25.0 L tank? • 181 K

  38. End of round Who is the weakest link

  39. Round 5 6 questions 10 second delay

  40. What volume is occupied by 5.03 g of O2 at 28°C and a pressure of 0.998atm? • 3.9 L

  41. Calculate the pressure in a 212 Liter tank containing 23.3 kg of argon gas at25°C? • 67.3 atm

  42. End of round Who is the weakest link

  43. Round 4 8 questions 10 second delay

  44. Which phase of matter has the HIGHEST attractive forces? • Solids

  45. Which state of matter is MOST fluid? • Gases

  46. The resistance of a substance to flow is called: • Viscosity

  47. Which state of matter takes the MOST pressure to compress: • Solids

  48. The resistance of a substance to flow is called: • Viscosity

  49. Viscosity is controlled by three properties name one. • Temperature • Attraction • shape

  50. What property of water is a measure of the inward pull of the molecules? • Surface tension

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