A Specially Prepared Sample of Nitrogen Contains 30% ¹⁴N (Mass

question 75

Multiple Choice

A specially prepared sample of nitrogen contains 30% ¹⁴N (mass = 14.00 u) and 70% ¹⁵N (mass = 15.00 u) . What is the atomic mass of the nitrogen in this sample?

• A) 14.00
• B) 14.30
• C) 14.50
• D) 14.70
• E) 15.00

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