kennejai kennejai
  • 20-10-2016
  • Physics
contestada

what is the mass number of an atom with 5 protons and 7 neutrons

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purl purl
  • 20-10-2016
7 times 5 equals 35 and that's how I got my answer because I just can't go out by 5 and3 5 give me the answer
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