A gas occupies 2 dm³ at 1 atm. What volume does it occupy at 4 atm and constant temperature?
Answer and explanation
Correct answer: D. 0.5 dm³
- Step 1: Boyle's law: P₁V₁ = P₂V₂. Step 2. V₂ = 1 × 2 ÷ 4 = 0.5 dm³. Answer: 0.5 dm³. Why not the others: 8 dm³ is what you get if you multiply instead of dividing. 6 dm³ is what you get if you add the factor. 0.125 dm³ is what you get if you divide by the factor twice.
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