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How many atoms are in a sample of 175 grams of sodium (na)?

1 answer:

6 0

1 Na = 23 g/mol

1 mole of Na atom contain an Avogadro Number of atoms .

23g of Na Na atom contain 6.02 * 10²³ atoms.

175 g of Na will contain: 175 * <span>6.02 * 10²³ / 23
</span>
≈ 4.580 * 10²⁴ atoms of Na.

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