A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it is released and brought to standard conditions (0°C, 760 mm Hg) will be _____________ litres?
Correct answer: A. 448
- A. 448
- B. 224
- C. 22.4
- D. Data insufficient; can't be computed
Explanation
Liquid oxygen has approximately 32 g/mol, so 640 g represents 20 mol. At STP, each mole occupies 22.4 L, giving 20 × 22.4 = 448 L.
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