2 litres of nitrogen at N.T.P. weighs ______________ gms ?
Correct answer: B. 2.5
- A. 14
- B. 2.5
- C. 28
- D. 1.25
Explanation
At NTP, nitrogen occupies about 22.4 L per mole, while one mole of N₂ weighs 28 g. Thus, 2 L weighs 28(2/22.4), approximately 2.5 g.
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