Answer:
It depends on what kind and how much. Some are about $100, and others are $1,000.
Explanation:
element with atomic numbers 7 and 83 have 5 and 5 valence electrons
If it is assumed that there are only two isotopes then the percent abundance needs to add up to 100%
100-35= 65%
The second isotope will have a 65% abundance.
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N=m/M
n=118/58.93=2
Answer: 2 moles
