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Elza [17]
2 years ago
9

An atom which has 9 protons, 8 neutrons, and 9 electrons will have an atomic mass of how many amu?

Chemistry
1 answer:
rjkz [21]2 years ago
8 0

Answer:

D

Explanation:

Protons and Neutrons both have a mass of about 1 amu so you add them but electrons have a mass of 0 amu so they are left out.

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