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dlinn [17]
3 years ago
13

An atom with 4 protons, 5 neutrons, and 4 electrons has an atomic mass of _____ amu. (Enter a whole number.)

Physics
1 answer:
Oksi-84 [34.3K]3 years ago
6 0
Atomic mass = number of protons + number of neutrons = 4+5 = 9 amu
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