A gas occupies 300 cm³ at 27 °C. What is its volume at 127 °C if pressure stays constant?
Correct answer C. 400 cm³
Explanation
Charles's law uses kelvin: V₂ = V₁T₂/T₁ = 300 × 400 K ÷ 300 K = 400 cm³. Using Celsius values wrongly gives 1411 cm³.
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