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An isotope of mercury has 80 protons and 120 neutrons. what is the mass number of this isotope.
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Calculate the mass of 0.750 mol of the following substance. na3po4. , i'm not quite sure on how to set up the problem to solve! : (
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An isotope of mercury has 80 protons and 120 neutrons. what is the mass number of this isotope....
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