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19-05-2017
Chemistry

contestada

What is the mass of an atom that has 4 protons, 5 neutrons, and 4 electrons?

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leha8291 leha8291

19-05-2017

the answer would be 9

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19-05-2017

To get the mass, you would add the 4 protons and 5 neutrons so it would be 9.
(The electrons weigh practically nothing so you just ignore them.)

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