Calculate the number of atoms in 1g of copper.
(Atomic mass of copper is 63.50.)
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1 mole of Cu contains 6.023 x 10^23 particles
63.5 g of Cu contains 6.023 x 10^23 particles
1 g of Cu contains 6.023 x 10^23 / 63.5
= 0.094 x 10^23 particles are present
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solution :-
=> atomic mass of copper = 6.02 × 10²³ atom of copper
=> 63.50 g of copper = 6.02 × 10²³ atim of copper
=> 1 g of copper = 6.02 × 10²³ / 63.50 atom of copper
=> 1 g of copper = 0.0948 × 10²³ atom of copper
=> 1 g of copper = 9.5 × 10²¹ atom of copper .
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