Calculate the number of gram atoms in 4.6 grams of sodium (Na = 23). – InterviewSolution

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1.

Calculate the number of gram atoms in 4.6 grams of sodium (Na = 23).

Answer»

1 gm atom is the mass of 1 mole of monoatomic element

1 mole of Na is equal to 23 gm atom of Na

23 gm of Na = 1 mole of Na

4.6 gm of Na = 4.6 x 1 /23 = 0.2 mole

So, number of gram atoms = 0.2 x 6.022 x 10²³ atoms

= 1.204 x 10²³ atoms

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