Pressure on the inside of the balloon was greater than the pressure on the outside of the balloon so it pushed out until the pressures equalized.
Coffee is a mixture because it is a mixture of many compounds
Answer:
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The volume is increased to 4.52 L on decreasing the pressure to 93.3 kPa.
Explanation:
As per Boyle's law, the volume occupied by gas particles will be inversely proportional to the pressure experienced by those particles at constant temperature.

So in the present problem, the volume of gas at pressure P₁ = 99.6 kPa is given as V₁ = 4.23 L. The temperature is kept constant at 24°C. Then, if the pressure is decreased to 93.3 kPa, then the volume is tend to increase due to Boyle's law.
So let us consider the new pressure be P₂ = 93.3 kPa and the new volume has to be found.
Then using Boyle's law, 
Then, 
So, 
Thus, the volume is increased to 4.52 L on decreasing the pressure to 93.3 kPa.