Using the atomic masses and relative abundance of the isotopes of nitrogen given below, determine the average atomic mass of nitrogen.

N-14: 14.003 amu; 99.63%

N-15: 15.000 amu; 0.37%

A) 14.003 amu

B) 14.007 amu

C) 14.506 amu

D) 15.000 amu

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