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Calculate the average atomic mass for neon if its abundance in nature is 90.5% neon-20, 0.3% neon-21, and 9.2% neon-22

Calculate the average atomic mass for neon if its abundance in nature is 90.5% neon-20, 0.3% neon-21, and 9.2% neon-22
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calculate the average atomic mass for neon if its abundance in nature is 90.5% neon-20, 0.3% neon-21, and 9.2% neon-22

asked
User Hashim Adel
by
9.2k points

2 Answers

4 votes

Answer: 20.187 amu

Step-by-step explanation:

20(0.905)+21(0.003)+22(0.092)

answered
User Mih Zam
by
8.9k points
5 votes
The average atomic mass of Neon would simply be the sum of the weighted average of each isotope. That is:

average atomic mass = 0.905 * 20 + 0.003 * 21 + 0.092 * 22

average atomic mass = 20.187 amu


answered
User Anower Perves
by
7.9k points
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