PRACTICE 1. A science class puts a balloon containing 1.25 L of air at 101 kPa into a bell jar. Using an air pump, the class removes some of the air in the jar, causing the balloon to expand to a volume of 2.25 L. Assuming a constant temperature, what is the new pressure inside the jar? 2. A small balloon is inated with helium at 102 kPa to a volume of 2.12 L. According to the balloon's manufacturer, if the balloon is stretched to a volume of 4.25 L, the balloon will p0p. If the balloon were released, at what pressure would the balloon pop? Assume constant temperature throughout. I Math Skills continued : 3- A" oxygen suppliet wants to reduce the volume of her oxygen tanks. She plans to take the oxygen in her 155 L tanks and store it in 95.5 L tanks. If the oxygen In the old tanks has a pressure of 8.27 x 103 kPa, what will the new pressure be aer the oxygen is compressed? Assume a constant temperature throughom- _________________________________ 4. A blocked bicycle pump contains 0.682 L of air at 99.3 kPa. If the handle is pressed down, decreasing the volume of the inside air to 0.151 L, what is the piessure inside the pump? Assume that the temperature of the air does not c ange. FRAME: t823x103kP Wht 1 HM n tank holds 355 L of oxygen a . a. a vo ume we 5. 31: ggrhgeamount of oxygen take up if the pressure were reduced to 4.11 x 103 kPa ? Assume that the temperature remains the same. F J Name Class Date I Math Skills continued - (F 6. A machine produces 599 L of hydrogen at 101 kPa each day. If each day's supply of hydrogen were kept at a pressure of 366 kPa, what would be the volume of the hydrogen? Assume that temperature is constant throughout. 7. A diver's tank holds 15.] L of air at a pressure of 1.53 x 104 kPa. If the air was released underwater at a pressure of 6.1 1 x 102 kPa, what would the volume of the released air be? Assume that temperature remains constant throughout. 8. A plastic food storage bag is sealed with 0.213 L of air inside at a pressure of 99.2 kPa. The bag is loaded onto a plane, where the pressure is decreased to 80.5 kPa. What is the size of the air in the bag after the pressure is decreased, if the temperature of the air remains the same? MIXED PRACTICE 9. A balloon is lled with helium in an airplane, where the air pressure is 81 kPa.. The lled balloon has a volume of 4.2 L. When the plane lands, the cabin is depressurized to the outside air pressure, which is 94 kPa. If the temperature of the balloon remains the same, what is the new volume of the balloon? 10. A small helium tank claims to be able to ll 30 balloons to a volume of 3.15 L at a pressure of 101 kPa. How many liters of helium will the tank be able to produce at a pressure of 94.2 kPa? Assume that the temperature of the tank remains the same throughout 11. A scuba diver carries a small balloon of air deep underwater. If the balloon has a volume of 2. 11 L at the surface, where the pressure is 102 kPa, what will the pressure be when the balloon has shrunk to a size of 0.581 L? Assume that the balloon '5 temperature remains the same throughout its descent. 12. A medical supply company stores oxygen in a 200.5 L tank at a pressure of 9,585 kPa. If the company transfers all of the oxygen to a 350.8 L tank, what will the pressure be inside the tank, if the temperature stays the same? 13. At a sewage treatment plant, methane is gathered for energy use. If 75 L of methane is produced at 94 kPa, how many liters would be produced at 100 kPa? Assume temperature remains constant throughout