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AP Bio 21 Online
OpenStudy (anonymous):

Which particles make up the majority of an atom's mass?

OpenStudy (maddy1251):

Protons and Neutrons @SwaydeWhited Together,, will make up the nucleus, the powerhouse of the atom.

OpenStudy (maddy1251):

Also, the nucleus makes up a large proportion of the mass of the atom.

OpenStudy (anonymous):

thanks!

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