A fixed mass of gas at constant temperature has volume 6 cm at 200 kPa. The volume is reduced to 3 cm. What is the new pressure?
Answer and explanation
Correct answer: B. 400 kPa
- Step 1: At constant temperature (Boyle's law).
- Step 2: kPa.
Answer
400 kPa.
Why not the others: 100 kPa: it treats pressure as directly proportional to volume. 203 kPa: it adds the change in volume to the pressure. 800 kPa: it doubles the correct value.
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