brianna5626
12.10.2019 •
Chemistry
An atom of element has 9 protons. what would the elements atomic number be
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Ответ:
If there are 9 protons then the atomic number is 9 because each atomic number goes by the amount of protons and element has
Ответ:
35.50 atomic mass
Explanation:
1. Multiplicate each isotope mass by its abundance
35 uma x 75% = 26.25 amu
37.01 uma x 25% = 9.2525 amu
2. Add the values
26.25 + 9.2525 = 35.50 atomic mass