Julie blows a bubble. At first, the pressure of the gas in the bubble is 4kPa. The bubble floats into the air and expands. When it gets to the top of a tree the bubble has a pressure of 2kPa and a volume of 3.5m³. Assuming a constant temperature, what was the volume in m³ of the bubble when it was first blown?
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Answer:
1.75m³
Explanation:
pV = constant
2kPa × 3.5m³ = constant
7 Pa m³ = constant
pressure = constant/volume
Rearrange the equation above to get:
volume = constant/pressure
volume = 7/4
volume = 1.75m³
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