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Chemistry, 16.10.2019 01:00 egyptforrest9892

2. what is the approximate mass of an atom that
contains 26 protons, 26 electrons and 19 neutrons?
a) 26 u b) 45 u c) 52 u d) 71 u
1
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2. what is the approximate mass of an atom that
contains 26 protons, 26 electrons and 19 neutr...
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