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16. Calculate the number of atoms in 69 U of Na and 69 gm of Na​

Answer» ONG>Answer:

w=69,

m=23,

mou=weight/mass=69/23=3

and we know in 1 MOLE=6.022×10²³

so in three mole =3×6.022×10²³

=18.069×10²³



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