Find the mass fractions of atoms in baking soda.

Let’s find the mass fractions of atoms (atomic mass fraction) in drinking water.
Mass fraction – the ratio of the relative atomic mass of an element multiplied by the number of its atoms in a molecule to the relative molecular mass of a substance.
w (H) = 1 * 2/18 = 2/18 = 0.11.
w (O) = 16/18 = 0.89.



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