Atoms are the indivisible particles of matter. Atoms, molecular mass, and moles can be related by the Avogadros number. There are 2.00 × 10²⁵ atoms of neon in the sample.
The mass of the substance is the multiplication product of the moles and the molar mass.
We know, that 1 mole = 6.022 x 10²³ atoms
From the Avogadro's number, mass, and the molar mass the number of atoms is calculated as:
(6.022 x 10²³ atoms ÷ 1 mole Neon) × (1 mole Neon ÷ 20.18g) × ((6.73x10²)g Ne) = 2.00 × 10²⁵ atoms.
Therefore, 2.00 × 10²⁵ atoms of neon are present in the sample.
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