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Alexandria Fleming
Chemistry
10 March, 22:35
How do calculate the mass number of an atom
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Dominick Coleman
10 March, 22:40
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You add the protons and the nuetrons together i think
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Mark Patton
10 March, 22:52
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To calculate the atomic mass of a single atom of an element, add up the mass of protons and neutrons. Example: Find the atomic mass of an isotope of carbon that has 7 neutrons. You can see from the periodic table that carbon has an atomic number of 6, which is its number of protons.
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