Nitrogen (n) is made up of 99.632% 14n and 0.368% 15n. the atomic mass of 14n is 14.003 amu. the atomic mass of 15n is 15.000 amu. what is the average atomic mass of nitrogen? . a. 14.0 amu. b. 14.006 amu. c. 15.00 amu. d. 15.50 amu.

14.006 amu

Explanation:

The other answer has a great explanation so I'm not gonna give any details. I just want to confirm this answer to be correct! :D Good luck on your test!

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so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer