Answer:
(a) 1 mole
of C contains 6.022 x 1023 atoms 5 moles of C will contain 5 x 6.022
x 1023 atoms
Molar mass
of C = 12 g
6.022 x 1023 C
atoms have mass =12 g
5 x 6.022 x 1023
C atoms have mass
On the other hand,
mole of Na
contains 6.022 x 1023 atoms
5 mole of Na
contains 5 x 6.022 x 1023 atoms
Molar mass
of Na = 23 g
6.022 x 1023 Na
atoms have mass = 23 g
5 x 6.022 x 1023
Na atoms have mass
Therefore,
the container having sodium atoms will be heavier.
(b) Both containers
have equal number of atoms, i.e., 5 x 6.022 x 1023 = 30.110 x 1023
atoms =3.01 1x1024 atoms
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