The mass of 0.5 mole of N_{2} gas is
- A. 7 g
- B. 14 g ✓
- C. 21 g
- D. 28 g
Correct Answer: B. 14 g
Explanation
The molar mass of nitrogen gas (N_{2}) is 28 g/mol. Therefore, 0.5 moles of N_{2} gas has a mass of 0.5 \times 28 = 14 g.
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