Oxygen gas is used to fill a balloon and a short time later the balloon is observed to only be half full. Explain this observation.
Responses
A The balloon leaks and the temperature went down.The balloon leaks and the temperature went down.
B More oxygen was added to the balloon and the temperature went up.More oxygen was added to the balloon and the temperature went up.
C The pressure outside the balloon went down and the pressure inside went down.The pressure outside the balloon went down and the pressure inside went down.
D The pressure outside the balloon went down and the temperature inside went up.
D The pressure outside the balloon went down and the temperature inside went up.
C The pressure outside the balloon went down and the pressure inside went down.
The correct answer is D: The pressure outside the balloon went down and the temperature inside went up.
Explanation:
When oxygen gas is used to fill a balloon, it expands to fill the available volume inside the balloon. However, if the pressure outside the balloon decreases, it can cause the gas inside the balloon to contract. This is because the pressure inside the balloon is greater than the pressure outside.
Additionally, if the temperature inside the balloon increases, it can cause the gas molecules to move faster and exert more pressure on the balloon walls. This increase in pressure can cause the balloon to expand further and appear fuller.
So, the observation that the balloon is only half full can be explained by a decrease in the pressure outside the balloon and an increase in temperature inside the balloon.