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A gas occupies 45 dm³ at pressure 9 atm. Find the volume at 3 atm.

A gas occupies 45 dm³ at pressure 9 atm. Find the volume at 3 atm.
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  • A 30 dm³
  • B 60 dm³
  • C 135 dm³
  • D 90 dm³
Correct Answer: Option C
Explanation:
Using Boyle’s law:<br/>9 × 45 = 3 × Vā‚‚<br/>405 = 3Vā‚‚<br/>Vā‚‚ = 135 dm³.<br/>Reducing the pressure allows the gas to expand greatly.

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