Question

238 g of uranium and 23 g of Na have same no of atoms give reason
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Answer 1

I can't understand this

Answer 2

Answer:

Both the substances have equal number of atoms because they have same no. of moles.

See, 1 mole of uranium atom has weight of 238g and 1 mole of sodium atom has weight of 23g.

But... 1 mole of uranium has... 6.022*10^23 atoms

and 1 mole of sodium also has 6.022*10^23 atoms.

That's why they have same no of atoms.