Chemistry, 07.03.2020 06:23, golderhadashaowtatz

A scientist wants to estimate the mass of an atom. What information can be used to do this?
The masses of the electrons and neutrons can be added together.
The atomic number of the element can be used.
The masses of the protons and neutrons can be added together.
The column number of the periodic table can be used.

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A scientist wants to estimate the mass of an atom. What information can be used to do this?
The...