Which gas law explains why an inflated balloon placed in liquid nitrogen shrinks dramatically in volume?
Answer and explanation
Correct answer: B. Charles's law
- Step 1: Charles's law states that for a constant mass of gas at constant pressure, volume is directly proportional to absolute temperature ().
- Step 2: Liquid nitrogen cools the gas inside the balloon from to , causing the thermal kinetic energy of molecules and volume to decrease dramatically.
Answer
Charles's law.
Why not the others: 'Boyle's law' relates pressure and volume at constant temperature; 'Avogadro's law' relates volume to mole quantity; 'Graham's law' governs rate of gas effusion based on molar mass.
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