Siti has a sealed syringe filled with 50 cm³ of air. She pushes the plunger in as much as she can. What is the most likely volume of air in the syringe now?
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Worked Solution
Step 1: Identify the state of matter (Air is a gas).
Step [2-9]: Recall properties of gases (Gases can be compressed and have no fixed volume).
Step [2-9]: Pushing the plunger reduces the space the air occupies, so the volume will be less than 50 cm³ but more than 0.
Correct answer: 25 cm³
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