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gladu [14]
3 years ago
9

How do you find the atomic mass mass number of an atom?

Chemistry
1 answer:
fomenos3 years ago
7 0
To calculate the atomic mass<span> of a single </span>atom<span>, add up the </span>mass<span> of protons and neutrons.

So, your answer would be A) add the number of protons and neutrons</span>
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