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# Chemistry Chapter 6

### gas laws

Question | Answer |
---|---|

What is volume? | How much space matter occupies. |

What is the formula for Pressure? | P = F X A |

How do you increase the pressure of a gas in a container? | Either add more gass, decrease the volume of container, or heat the container up. |

What is the name of the device used to measure atmospheric pressure? | barometer |

What is the SI unit for pressure? | pascal |

What is a system with zero pressure known as? | a vacuum |

What is STP? | Standard Temperature Pressure |

What is the standard pressure of a gas in kPa? | 101.325 kPa |

What is the standard pressure of a gas in atm? | 1 atm |

1kPa = ? Pa | 1000 Pa |

1kPa = ? atm | .009869 atm |

1kPa = ? bar | .01 bar |

1kPa = ? torr | 7.501 torr |

1 kPa = ? mm Hg | 7.501 mm Hg |

1 kPa = ? psi | .145 psi |

What is a device used to measure pressure of a confined gas? | manometer |

What is the individual pressure of a gas called? | partial pressure |

What is the equation for Dalton's Law of Partial Pressure? | PTotal = Pa + Pb + Pc |

What is absolute zero? | 0 K |

How do you convert from degrees Celsius to Kelvin? | add 273 |

Why is 0 K known as absolute zero? | That is the temperature where an ideal gas can no longer condense and is the lowest temperature possible. |

What is the formula for Charles's Law? | Vi/Ti = Vf/Tf |

What is the formula for Boyle's Law? | PiVi = PfVf |

Is Charles's Law a direct proportion or an inverse proportion? | direct |

Is Boyle's Law a direct proportion or an inverse proportion? | inverse |

What law states that whenever gases react under the same conditions of temperature and pressure, the volume ratios of the reactants can be expressed as simple whole numbers. | Law of combining volumes |

What is Avogadros principle? | equal volumes of gases contain equal numbers of particles |

What is the formula for Avogadro's principle? | Vi/ni = Vf/nf |

A gas occupies a volume of 100 cm3 at a temp of 200 K. What is volume if gas has a temp of 150 K. | 75 cm3 |

A sample of gas has volume of 2.25 dm3 and a temp of 298 K. What is the volume if the gas has a temp of 373 K? | 2.82 dm3 |

A sample of gas has a volume of 275 cm3 and a temp of 273K. What is the temp if the new volume is 325 cm3. | 323 K |

If the atmospheric pressure is 99.4 kPa and the water vapor pressure is 4.5 kPa then what is the partial pressure of the oxygen gas? | 94.9 kPa |

If a gas has a volume of 25dm3 and a pressure of 100 kPa, what is the volume of the gas at 75 kPa? | 33 dm3 |

As the temperature increases, the rate of motion of gas molecules________. | increases |

To determine the gas pressure using a manometer, you need to measure the _______. | difference in the height of the two columns of mercury |

Which law describes the relationship between the volume and temperature of a gas? | Charles's Law |

Which law describes the relationship between volume and pressure? | Boyle's Law |

According to Avogadro's principle, equal _______ of gas at the same temperature and pressure contain equal numbers of particles. | volumes |

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jjautry3