Chemistry Graphs: Charles' Law

Charles' Law states that the volume (V) of a confined gas is directly proportional to its temperature (T) in Kelvin.

When the temperature changes one unit on the Kelvin scale it is equivalent to a change in one Celsius degree; that is, they are in a one-to-one correspondence. Note that 0 on the Kevin scale represents "Absolute Zero" or -273 ºC.

Use the following graph of Volume vs. Temperature to answer the next four questions.

General Questions
 As the temperature of the gas increases from 250 K to 350 K, does the volume of the gas increase or decrease?
 1

 What is the volume of this gas sample when its temperature is 300 K?
 2

 What is the temperature of the gas when it occupies a volume of 250 mL?
 3

 If 0.05 moles of gas are present in our sample, use the slope of the line to determine the constant pressure that was exerted on the gas during this experiment.
 4

M Aumiller

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