Question

None of these
Calculate the number of gram atoms of an element
in 40 kg, if weight of one atom of an element is
6.644 x 10-23 g
(1) 102 g atom (2) 10 g atom
(3) 103 g atom
(4) None of these​

Answer 1

Answer:Mass of 1 atom= 6.644 x 10^ 23x mass of atoms. = 40.13 gm. So, Number of gram atoms in 40 kg = 1000

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