Question

atomic mass of sodium 23n

Answer 1

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Oxygen's atomic weight is 16.00 amu 1 mole of oxygen is 6.02 x 1023 atoms of oxygen 1 amu = 1.661 x 10-24g What is the molar mass (g/mole) of oxygen? Molar mass (in grams) is always equal to the atomic weight of the atom!

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Answer 2

atomic mass of sodium is 22.98 which is rounded to 23