A balloon with a pressure of 2.2 atm and a volume of 2.5 L is released in the mountains of Colorado. As the balloon ascends, the volume of the balloon gets noticebly larger and increases to a volume of 4.0 L. What is the new pressure of the balloon?

1.38 atm

Explanation:

Using Boyle's law which states that the volume of a given mass of gas is inversely proportional to the pressure, provided temperature remains constant

P1V1= P2V2

P1 = 2.2 atm, V1 = 2.5L ,

P2 = ? , V2 = 4L

2.2 × 2.5  = P2 × 4

Divide both sides by 4

P2 = 5.5 ÷ 4

P2 = 1.38 atm

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