Charles's law states that at constant pressure the volume of a fixed mass of gas is
Correct answer: B. directly proportional to the absolute temperature
- A. inversely proportional to the absolute temperature
- B. directly proportional to the absolute temperature
- C. independent of temperature
- D. proportional to the square of the temperature
Explanation
Volume rises in direct proportion to absolute temperature, so a graph of V against T in kelvin is a straight line that extrapolates back to the origin. Using degrees Celsius breaks the proportionality entirely, which is why the temperature must always be converted. This is the law behind a hot air balloon.
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About Charles's Law
At constant pressure, the volume of a fixed mass of gas is directly proportional to its absolute temperature. Questions involve the Kelvin scale, the equation V₁/T₁ = V₂/T₂, volume-temperature graphs, and the need to distinguish Charles's law from Boyle's law, which relates pressure and volume.
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A gas at 27 degrees C is heated at constant pressure until its volume doubles. Its final temperature is
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Charle's Law was given by Jacques Charles in_______?
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