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OpenStudy (anonymous):

Oxygen has an atomic mass of 16 and an atomic number of 8. How many neutrons are present? 8 4 24 16

OpenStudy (aaronq):

Atomic Mass = atomic number + number of neutrons

OpenStudy (anonymous):

24 neutrons

OpenStudy (anonymous):

you just have to add 16+8 :)

OpenStudy (anonymous):

Wrong, No of neutrons = Atomic Mass - Atomic number No of neutrons = 16 - 8 No of neutrons = 8

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