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15-03-2018
Biology

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An atom with 5 protons, 6 neutrons, and 5 electrons has an atomic mass of _____ amu. (Enter a whole number.)

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KindaSmartPersonn KindaSmartPersonn

15-03-2018

The answer is 11 Amu

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budwilkins budwilkins

15-03-2018

Yes it is 11 atomic mass units (amu). Atomic mass (aka mass number) is asking "what is the weight of the nucleus?"
The nucleus contains all of the protons and neutrons, thus:
atomic mass = P + N = 5 + 6 = 11 amu

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